Emigration is the act of leaving a resident country or place of residence with the intent to settle elsewhere. Conversely, immigration describes the movement of persons into one country from another. Both are acts of migration across national or other geographical boundaries.
Demographers examine push and pull factors for people to be pushed out of one place and attracted to another. There can be a desire to escape negative circumstances such as shortages of land or jobs, or unfair treatment. People can be pulled to the opportunities available elsewhere. Fleeing from oppressive conditions, being a refugee and seeking asylum to get refugee status in a foreign country, may lead to permanent emigration.
Patterns of emigration have been shaped by numerous economic, social, and political changes throughout the world in the last few hundred years. For instance, millions of individuals fled poverty, violence, and political turmoil in Europe to settle in the Americas and Oceania during the 18th, 19th, and 20th centuries. Likewise, millions left South China in the Chinese diaspora during the 19th and early 20th centuries.
Demographers distinguish factors at the origin that push people out, versus those at the destination that pull them in. Motives to migrate can be either incentives attracting people away, known as pull factors, or circumstances encouraging a person to leave.
Some scholars criticize the push pull theory. Regarding lists of positive or negative factors about a place, Jose C. Moya writes "one could easily compile similar lists for periods and places where no migration took place."
Unlike immigration, few if any records are maintained in regard to persons leaving a country either on a temporary or permanent basis. Therefore, estimates on emigration must be derived from secondary sources such as immigration records of the receiving country or records from other administrative agencies.
Some countries restrict the ability of their citizens to emigrate to other countries. After 1668, the Qing Emperor banned Han Chinese migration to Manchuria. In 1681, the emperor ordered construction of the Willow Palisade, a barrier beyond which the Chinese were prohibited from encroaching on Manchu and Mongol lands.
The Soviet Socialist Republics of the later Soviet Union began such restrictions in 1918, with laws and borders tightening until even illegal emigration was nearly impossible by 1928. To strengthen this, they set up internal passport controls and individual city Propiska ("place of residence") permits, along with internal freedom of movement restrictions often called the 101st kilometre, rules which greatly restricted mobility within even small areas.
At the end of World War II in 1945, the Soviet Union occupied several Central European countries, together called the Eastern Bloc, with the majority of those living in the newly acquired areas aspiring to independence and wanted the Soviets to leave. Before 1950, over 15 million people emigrated from the Soviet-occupied eastern European countries and immigrated into the west in the five years immediately following World War II. By the early 1950s, the Soviet approach to controlling national movement was emulated by most of the rest of the Eastern Bloc. Restrictions implemented in the Eastern Bloc stopped most East-West migration, with only 13.3 million migrations westward between 1950 and 1990. However, hundreds of thousands of East Germans annually immigrated to West Germany through a "loophole" in the system that existed between East and West Berlin, where the four occupying World War II powers governed movement. The emigration resulted in massive "brain drain" from East Germany to West Germany of younger educated professionals, such that nearly 20% of East Germany's population had migrated to West Germany by 1961. In 1961, East Germany erected a barbed-wire barrier that would eventually be expanded through construction into the Berlin Wall, effectively closing the loophole. In 1989, the Berlin Wall fell, followed by German reunification and within two years the dissolution of the Soviet Union.
By the early 1950s, the Soviet approach to controlling international movement was also emulated by China, Mongolia, and North Korea. North Korea still tightly restricts emigration, and maintains one of the strictest emigration bans in the world, although some North Koreans still manage to illegally emigrate to China. Other countries with tight emigration restrictions at one time or another included Angola, Egypt, Ethiopia, Mozambique, Somalia, Afghanistan, Burma, Democratic Kampuchea (Cambodia from 1975-1979), Laos, North Vietnam, Iraq, South Yemen and Cuba.
Otto Adolf Eichmann (; German: [ˈʔɔtoː ˈʔaːdɔlf ˈʔaɪ̯çman]; 19 March 1906 – 1 June 1962) was a German-Austrian Nazi SS-Obersturmbannführer ("Senior Assault Unit Leader") and one of the major organizers of the Holocaust. He was tasked by SS-Obergruppenführer ("Senior Group Leader") Reinhard Heydrich with facilitating and managing the logistics involved in the mass deportation of Jews to ghettos and extermination camps in Nazi-occupied Eastern Europe during World War II. He was captured by the Mossad in Argentina on 11 May 1960 and subsequently found guilty of war crimes in a widely publicised trial in Jerusalem, Israel. Eichmann was executed by hanging in 1962.
After an unremarkable school career, Eichmann briefly worked for his father's mining company in Austria, where the family had moved in 1914. He worked as a travelling oil salesman beginning in 1927, and joined both the Nazi Party and the SS in 1932. He returned to Germany in 1933, where he joined the Sicherheitsdienst (SD; Security Service); there he was appointed head of the department responsible for Jewish affairs—especially emigration, which the Nazis encouraged through violence and economic pressure. After the outbreak of the Second World War in September 1939, Eichmann and his staff arranged for Jews to be concentrated in ghettos in major cities with the expectation that they would be transported either farther east or overseas. He also drew up plans for a Jewish reservation, first at Nisko in southeast Poland and later in Madagascar, but neither of these plans was ever carried out.
The Nazis began the invasion of the Soviet Union in June 1941, and their Jewish policy changed from emigration to extermination. To co-ordinate planning for the genocide, Heydrich, who was Eichmann's superior, hosted the regime's administrative leaders at the Wannsee Conference on 20 January 1942. Eichmann collected information for him, attended the conference, and prepared the minutes. Eichmann and his staff became responsible for Jewish deportations to extermination camps, where the victims were gassed. Germany invaded Hungary in March 1944, and Eichmann oversaw the deportation of much of the Jewish population. Most of the victims were sent to Auschwitz concentration camp, where about 75 per cent were murdered upon arrival. By the time that the transports were stopped in July 1944, 437,000 of Hungary's 725,000 Jews had been killed. Dieter Wisliceny testified at Nuremberg that Eichmann told him he would "leap laughing into the grave because the feeling that he had five million people on his conscience would be for him a source of extraordinary satisfaction".After Germany's defeat in 1945, Eichmann was captured by US forces, but escaped from a detention camp and moved around Germany to avoid re-capture. He ended up in a small village in Lower Saxony, where he lived until 1950, when he moved to Argentina using false papers. Information collected by the Mossad, Israel's intelligence agency, confirmed his location in 1960. A team of Mossad and Shin Bet agents captured Eichmann and brought him to Israel to stand trial on 15 criminal charges, including war crimes, crimes against humanity, and crimes against the Jewish people. During the trial, he did not deny the Holocaust or his role in organising it, but claimed that he was simply following orders in a totalitarian Führerprinzip system. He was found guilty on all of the charges, and was executed by hanging on 1 June 1962. The trial was widely followed in the media and was later the subject of several books, including Hannah Arendt's Eichmann in Jerusalem, in which Arendt coined the phrase "the banality of evil" to describe Eichmann.Chinese emigration
Waves of Chinese emigration (also known as the Chinese diaspora) have happened throughout history. The mass emigration known as the Chinese diaspora, which occurred from the 19th century to 1949, was mainly caused by wars and starvation in mainland China, invasion from various foreign countries, as well as problems resulting from political corruption. Most emigrants were illiterate peasants and manual labourers, who emigrated to work in places such as the Americas, Australia, South Africa, Southeast Asia, and Zealandia.
According to Lynn Pan's book Sons of the Yellow Emperor, the Chinese coolie emigration began after slavery was abolished throughout the British possessions. Facing a desperate shortage of manpower, European merchants looked to replace African slaves with indentured laborers from China and India. A British Guiana planter found what he was looking for in the Chinese laborers: "their strong physique, their eagerness to make money, their history of toil from infancy".
Labour recruiters sold the services of large numbers of unskilled Chinese in the coolie trade to planters in colonies overseas in exchange for money to feed their families. This type of trading was known as Mai Zhu Zai (simplified Chinese: 卖猪仔; traditional Chinese: 賣豬仔; pinyin: mài zhū zǎi; literally: 'selling piglets') to the Chinese. The laborers' lives were very harsh. Some labor recruiters promised good pay and good working conditions to get men signed onto three-year labor contracts. It was recorded that on one pepper estate, fifty coolies hired, only two survived in half a year. Most coolies were treated badly, and many died en route to South America and South Africa because of bad transport conditions. Usually, they were cheated of their wages and were unable to return to China after their contracts expired.Cornish diaspora
The Cornish diaspora consists of Cornish people and their descendants who emigrated from Cornwall, England. The diaspora is found within the United Kingdom, and in countries such as the United States, Canada, Australia, Argentina, New Zealand, Mexico, Panama, South Africa, the Samoas and Brazil.Eastern Bloc emigration and defection
Eastern Bloc emigration and defection was a point of controversy during the Cold War. After World War II, emigration restrictions were imposed by countries in the Eastern Bloc, which consisted of the Soviet Union and its satellite states in Central and Eastern Europe. Legal emigration was in most cases only possible in order to reunite families or to allow members of minority ethnic groups to return to their homelands.
Eastern Bloc governments argued that strict limits to emigration were necessary to prevent a brain drain. The United States and Western European governments argued that they represented a violation of human rights. Despite the restrictions, defections to the West occurred.
After East Germany tightened its zonal occupation border with West Germany, the city sector border between East Berlin and West Berlin became a loophole through which defection could occur. This was closed with the erection of the Berlin Wall in 1961. Thereafter, emigration from the Eastern Bloc was effectively limited to illegal defections, ethnic emigration under bilateral agreements, and a small number of other cases.Emigration from Colombia
Emigration from Colombia is a migratory phenomenon that has been taking place in Colombia since the early 20th century.Emigration from Kosovo
A substantial emigration from Kosovo has been taken place in various phases during the second half of the 20th century. It is estimated that about a third of people of Kosovan descent currently live outside Kosovo. Emigration has taken place in separate waves motivated mainly by economic reasons, but also as a result of the Kosovo War. The Kosovo diaspora is usually included in the wider Albanian diaspora with Albanians from Albania and Macedonia.Emigration from Uruguay
Emigration from Uruguay is a migratory phenomenon that has been taking place in Uruguay since the early 20th century.Emigration from the United States
Emigration from the United States is a complex demographic process where individuals born in the United States move to live in other countries. The process is the reverse of the immigration to the United States. The United States does not keep track of emigration, and counts of Americans abroad are thus only available courtesy of statistics kept by the destination countries.European emigration
European emigration can be defined as subsequent emigration waves from the European continent to other continents. The origins of the various European diasporas can be traced to the people, who left the European nation states or stateless ethnic communities on the European continent.From 1815 to 1932, 60 million people left Europe (with many returning home), primarily to "areas of European settlement" in the Americas (especially to the United States, Canada, Brazil, the Southern Cone such as Argentina, and Uruguay), Australia, New Zealand and Siberia.
These populations also multiplied rapidly in their new habitat; much more so than the populations of Africa and Asia. As a result, on the eve of World War I, 38% of the world's total population was of European ancestry.More contemporary, European emigration can also refer to emigration from one European country to another, especially in the context of the internal mobility in the European Union (intra-EU mobility) or mobility within the Eurasian Union.Haitian emigration
Haitian emigration was a movement to describe the emigration of free blacks from the United States to settle in Haiti in the early 19th century.
In an attempt to break out from the United States’ racist filled society, antebellum free Blacks emigrated to Haiti. Although a few emigrants left for Haiti during the 1810s, it was not until 1824 that with the support of the Haitian President Jean-Pierre Boyer that the emigration began in earnest. The Haitian emigration project ran against the wishes of the American Colonization Society, which attempted to remove free Blacks as far as Africa and dreaded the idea of strengthening the Black state of Haiti. Several thousand Blacks departed toward Haiti the summer of 1824 and the flow continued until 1826 when the Haitian government stopped paying and defraying the transportation costs. U.S. Blacks continued moving to Haiti after this, but the numbers were never as high as those that left between the years of 1824–1826. Another Haitian emigration scheme began in 1859 and lasted for about three years. Even though this project had the support of Abraham Lincoln and other political figures, the frustrations of the 1820s and an increasing Black identification with the U.S. substantially hindered the enthusiasm this time.Human capital flight
Human capital flight refers to the emigration of individuals who have received advanced training at home. The net benefits of human capital flight for the receiving country are sometimes referred to as a "brain gain" whereas the net costs for the sending country are sometimes referred to as a "brain drain". In occupations that experience a surplus of graduates, immigration of foreign-trained professionals can aggravate the underemployment of domestic graduates.Research shows that there are significant economic benefits of human capital flight both for the migrants themselves and the receiving country. While there are a series of positive and negative effects in the economy of countries of origin, with many developing countries devising strategies to avoid emigration of skilled labor. It has been found that emigration of skilled individuals to the developed world contributes to greater education and innovation in the developing world. Research also suggests that emigration, remittances and return migration can have a positive impact on democratization and the quality political institutions in the country of origin.Immigration to Canada
Immigration to Canada is the process by which people migrate to Canada to reside there. The majority of these people become Canadian citizens. After 1947, domestic immigration law and policy went through major changes, most notably with the Immigration Act, 1976, and the current Immigration and Refugee Protection Act from 2002.
In Canada there are four categories of immigrants: family-class (closely related persons of Canadian residents living in Canada), economic immigrants (skilled workers and business people), refugees (people who are escaping persecution, torture or cruel and unusual punishment), and the humanitarian and other category (people accepted as immigrants for humanitarian or compassionate reasons). In 2016, Canada admitted 296,346 permanent residents, compared to 271,845 the previous year – the highest admissions levels since 2010. Of those admitted, 53% were economic immigrants and their accompanying immediate families; 26% were family class; 20% were either resettled refugees or protected persons; and 1% were in the humanitarian and other category.According to data from the 2016 census by Statistics Canada, 21.9% of the Canadian population reported they were or had ever been a landed immigrant or permanent resident in Canada – nearly the 22.3% recorded during the 1921 Census, which was the highest level since the 1867 Confederation of Canada. More than one in five Canadians were born abroad, and 22.3% of the population belonged to visible minorities, of whom 3 in 10 were born in Canada.In 2013–2014, most of the Canadian public, as well as the major political parties, supported either sustaining or increasing the current level of immigration. A 2014 sociological study concluded that "Australia and Canada are the most receptive to immigration among western nations". However, in 2017, the majority of Canadians indicated that they agree that Canada should accept fewer immigrants and refugees.Canadian immigration policies are still evolving. In 2008, Citizenship and Immigration Canada made significant changes to streamline the steady flow of immigrants, such as changes reducing professional categories for skilled immigration as well as caps for immigrants in various categories. In 2015, Canada introduced the Express Entry system, providing a streamlined application process for many economic immigrants. Additional changes were made in April and May 2017. In November 2017, Immigration Minister Ahmed Hussen announced that Canada would admit nearly 1 million permanent residents to Canada over the following three years, rising from 0.7% to 1% of its population by 2020. This increase was motivated by the economic needs of the country facing an aging demographic, with the number of senior citizens expected to double by 2036 alongside a decline in the proportion of working-age adults.Italian diaspora
The Italian diaspora is the large-scale emigration of Italians from Italy. There are two major Italian diasporas in Italian history. The first diaspora began more or less around 1880, a decade or so after the Unification of Italy (with most leaving after 1880), and ended in the 1920s to early-1940s with the rise of Fascism in Italy. The second diaspora started after the end of World War II and roughly concluded in the 1970s. These together constituted the largest voluntary emigration period in documented history. Between 1880-1976; about 13,000,000 Italians left the country permanently. By 1978, it was estimated that about 25,000,000 Italians were residing outside Italy. A third wave is being reported in present times, due to the socio-economic problems caused by the financial crisis of the early twenty-first century, especially amongst the youth. According to the Public Register of Italian Residents Abroad (AIRE), figures of Italians abroad rose from 3,106,251 in 2006 to 4,636,647 in 2015, growing by 49.3% in just ten years.Jamaica
Jamaica ( (listen)) is an island country situated in the Caribbean Sea. Spanning 10,990 square kilometres (4,240 sq mi) in area, it is the third-largest island of the Greater Antilles and the fourth-largest island country in the Caribbean. Jamaica lies about 145 kilometres (90 mi) south of Cuba, and 191 kilometres (119 mi) west of Hispaniola (the island containing the countries of Haiti and the Dominican Republic).
Previously inhabited by the indigenous Arawak and Taíno peoples, the island came under Spanish rule following the arrival of Christopher Columbus in 1494. Many of the indigenous people died of disease, and the Spanish transplanted African slaves to Jamaica as labourers. The island remained a possession of Spain until 1655, when England (later Great Britain) conquered it and renamed it Jamaica. Under British colonial rule Jamaica became a leading sugar exporter, with its plantation economy highly dependent on African slaves. The British fully emancipated all slaves in 1838, and many freedmen chose to have subsistence farms rather than to work on plantations. Beginning in the 1840s, the British utilized Chinese and Indian indentured labour to work on plantations. The island achieved independence from the United Kingdom on 6 August 1962.
With 2.9 million people, Jamaica is the third-most populous Anglophone country in the Americas (after the United States and Canada), and the fourth-most populous country in the Caribbean. Kingston is the country's capital and largest city, with a population of 937,700. Jamaicans mainly have African ancestry, with significant European, Chinese, Indian, Lebanese, and mixed-race minorities. Due to a high rate of emigration for work since the 1960s, Jamaica has a large diaspora around the world, particularly in Canada, the United Kingdom, and the United States.
Jamaica is an upper-middle income country with an average of 4.3 million tourists a year.Jamaica is a Commonwealth realm, with Queen Elizabeth II as its monarch and head of state. Her appointed representative in the country is the Governor-General of Jamaica, an office held by Sir Patrick Allen since 2009. Andrew Holness has served as the head of government and Prime Minister of Jamaica from March 2016. Jamaica is a parliamentary constitutional monarchy with legislative power vested in the bicameral Parliament of Jamaica, consisting of an appointed Senate and a directly elected House of Representatives.Japanese diaspora
The Japanese diaspora, and its individual members known as nikkei (日系) or nikkeijin (日系人), are the Japanese immigrants from Japan and their descendants that reside in a foreign country. Emigration from Japan was recorded as early as the 12th century to the Philippines, but did not become a mass phenomenon until the Meiji period, when Japanese began to go to the Philippines and the Americas. There was also significant emigration to the territories of the Empire of Japan during the colonial period; however, most emigrants repatriated to Japan after the surrender of Japan and the end of World War II in Asia.According to the Association of Nikkei and Japanese Abroad, there are about 3.8 million nikkei living in their adopted countries. The largest of these foreign communities are in Brazil, the United States, the Philippines, China, Canada, and Peru. Descendants of emigrants from the Meiji period still hold recognizable communities in those countries, forming separate ethnic groups from Japanese people in Japan. Nevertheless, most Japanese are largely assimilated outside of Japan.
As of 2018, the Ministry of Foreign Affairs report that the top 5 countries with the highest number of Japanese expatriates are the United States (426,206), China (124,162), Australia (97,223), Thailand (72,754) and Canada (70,025).Jewish exodus from Arab and Muslim countries
The Jewish exodus from Arab and Muslim countries, or Jewish exodus from Arab countries, was the departure, flight, expulsion, evacuation and migration of 850,000 Jews, primarily of Sephardi and Mizrahi background, from Arab and Muslim countries, mainly from 1948 to the early 1970s. The last major migration wave took place from Iran in 1979–80, as a consequence of the Islamic Revolution.
A number of small-scale Jewish exoduses began in many Middle Eastern countries early in the 20th century with the only substantial aliyah coming from Yemen and Syria. Prior to the creation of Israel in 1948, approximately 800,000 Jews were living in lands that now make up the Arab world. Of these, just under two-thirds lived in the French and Italian-controlled North Africa, 15–20% in the Kingdom of Iraq, approximately 10% in the Kingdom of Egypt and approximately 7% in the Kingdom of Yemen. A further 200,000 lived in Pahlavi Iran and the Republic of Turkey.
The first large-scale exoduses took place in the late 1940s and early 1950s, primarily from Iraq, Yemen and Libya. In these cases over 90% of the Jewish population left, despite the necessity of leaving their property behind. Two hundred and sixty thousand Jews from Arab countries immigrated to Israel between 1948 and 1951, accounting for 56% of the total immigration to the newly founded state. Following the establishment of the State of Israel, a plan to accommodate 600,000 immigrants over four years, doubling the existing Jewish population, was submitted by the Israeli government to the Knesset. The plan, however, encountered mixed reactions; there were those within the Jewish Agency and government who opposed promoting a large-scale emigration movement among Jews whose lives were not in danger.Later waves peaked at different times in different regions over the subsequent decades. The peak of the exodus from Egypt occurred in 1956 following the Suez Crisis. The exodus from the other North African Arab countries peaked in the 1960s. Lebanon was the only Arab country to see a temporary increase in its Jewish population during this period, due to an influx of Jews from other Arab countries, although by the mid-1970s the Jewish community of Lebanon had also dwindled. Six hundred thousand Jews from Arab and Muslim countries had reached Israel by 1972. In total, of the 900,000 Jews who left Arab and other Muslim countries, 600,000 settled in the new state of Israel, and 300,000 migrated to France and the United States. The descendants of the Jewish immigrants from the region, known as Mizrahi Jews ("Eastern Jews") and Sephardic Jews ("Spanish Jews"), currently constitute more than half of the total population of Israel, partially as a result of their higher fertility rate. In 2009, only 26,000 Jews remained in Arab countries and Iran. and 26,000 in Turkey.The reasons for the exodus included push factors, such as persecution, antisemitism, political instability, poverty and expulsion, together with pull factors, such as the desire to fulfill Zionist yearnings or find a better economic status and a secure home in Europe or the Americas. The history of the exodus has been politicized, given its proposed relevance to the historical narrative of the Arab–Israeli conflict. When presenting the history, those who view the Jewish exodus as analogous to the 1948 Palestinian exodus generally emphasize the push factors and consider those who left as refugees, while those who do not, emphasize the pull factors and consider them willing immigrants.Maltese people
The Maltese (Maltese: Maltin, Italian: Maltesi) are a nation and an ethnic group indigenous to Malta, and identified with the Maltese language. Malta is an island in the middle of the Mediterranean Sea. Included within the ethnic group defined by the Maltese people are the Gozitans (Maltese: Għawdxin, Italian: Gozzitani) who inhabit Malta's sister island, Gozo.Swedish emigration to the United States
During the Swedish emigration to the United States in the 19th and early 20th centuries, about 1.3 million Swedes left Sweden for the United States of America. While the virgin land of the U.S. frontier was a magnet for the rural poor all over Europe, some factors encouraged Swedish emigration in particular. The religious repression practiced by the Swedish Lutheran State Church was widely resented, as was the social conservatism and class snobbery of the Swedish monarchy. Population growth and crop failures made conditions in the Swedish countryside increasingly bleak. By contrast, reports from early Swedish emigrants painted the American Midwest as an earthly paradise, and praised American religious and political freedom and undreamed-of opportunities to better one's condition.
Swedish migration to the United States peaked in the decades after the American Civil War (1861–65). By 1890 the U.S. census reported a Swedish-American population of nearly 800,000. Most immigrants became pioneers, clearing and cultivating the prairie, but some forces pushed the new immigrants towards the cities, particularly Chicago. Single young women usually went straight from agricultural work in the Swedish countryside to jobs as housemaids in American towns. Many established Swedish Americans visited the old country in the later 19th century, their narratives illustrating the difference in customs and manners. Some made the journey with the intention of spending their declining years in Sweden, but changed their minds when faced with what they thought an arrogant aristocracy, a coarse and degraded laboring class, and a lack of respect for women.
After a dip in the 1890s, emigration rose again, causing national alarm in Sweden. A broad-based parliamentary emigration commission was instituted in 1907. It recommended social and economic reform in order to reduce emigration by "bringing the best sides of America to Sweden." The commission's major proposals were rapidly implemented: universal male suffrage, better housing, general economic development, and broader popular education. The impact of these measures is hard to assess, as World War I (1914–18) broke out the year after the commission published its last volume, reducing emigration to a mere trickle. From the mid-1920s, there was no longer a Swedish mass emigration.Welsh people
The Welsh (Welsh: Cymry) are a Celtic nation and ethnic group native to, or otherwise associated with, Wales, Welsh culture, Welsh history and the Welsh language. Wales is a country that is part of the United Kingdom, and the majority of people living in Wales are British citizens.The language, which falls within the Insular Celtic family, has historically been spoken throughout Wales, with its predecessor Common Brittonic once spoken throughout most of the island of Great Britain. Prior to the 20th century, large numbers of Welsh people spoke only Welsh, with little or no fluent knowledge of English. Welsh remains the predominant language in parts of Wales, particularly in North Wales and West Wales. English is the predominant language in South Wales. Many Welsh people, even in predominately English-speaking areas of Wales, are fluent or semi-fluent in Welsh or, to varying degrees, capable of speaking or understanding Welsh at limited or conversational proficiency levels. Although the Welsh language and its ancestors have been spoken in what is now Wales since well before the Roman incursions into Britain, historian John Davies argues that the origin of the "Welsh nation" can be traced to the late 4th and early 5th centuries, following the Roman departure. The term "Welsh people" applies to people from Wales and people of Welsh ancestry perceiving themselves or being perceived as sharing a cultural heritage and shared ancestral origins.In 2016, an analysis of the geography of Welsh surnames commissioned by the Welsh Government found that 718,000 people (nearly 35% of the Welsh population) have a family name of Welsh origin, compared with 5.3% in the rest of the United Kingdom, 4.7% in New Zealand, 4.1% in Australia, and 3.8% in the United States, with an estimated 16.3 million people in the countries studied having at least partial Welsh ancestry. Over 300,000 Welsh people live in London alone.