Immigration in the context of Jocelyne Cesari

Colonization (British English: colonisation) is a process of establishing control over areas or peoples for foreign people to advance their trade, cultivation, exploitation and possibly settlement. Colonization functions through establishing a differentiation between the area and people of the colonized and colonizers, establishing metropoles, coloniality and possibly outright colonies. Colonization is commonly pursued and maintained by, but distinct from, imperialism, mercantilism, or colonialism. Conquest can take place without colonization, but a conquering process may often result in or from migration and colonizing. The term "colonization" is sometimes used synonymously with the word "settling", as with colonization in biology.

Settler colonialism is a type of colonization structured and enforced by the settlers directly, while their or their ancestors' metropolitan country (metropole) maintains a connection or control through the settler's activities. In settler colonization, a minority group rules either through the assimilation or oppression of the existing inhabitants, or by establishing itself as the demographic majority through driving away, displacing or outright killing the existing people, as well as through immigration and births of metropolitan as well as other settlers.

Figures for the population of Europe vary according to the particular definition of Europe's boundaries. In 2018, Europe had a total population of over 751 million people. 448 million of them lived in the European Union and 110 million in European Russia; Russia is the most populous country in Europe.

Europe's population growth is low, and its median age high. Most of Europe is in a mode of sub-replacement fertility, which means that each new(-born) generation is less populous than the one before. Nonetheless, most West European countries still have growing populations, mainly due to immigration within Europe and from outside Europe and some due to increases in life expectancy and population momentum. Some current and past factors in European demography have included emigration, ethnic relations, economic immigration, a declining birth rate and an ageing population.

Religious assimilation refers to the adoption of a majority or dominant culture's religious practices and beliefs by a minority or subordinate culture. It is an important form of cultural assimilation.

Religious assimilation includes the religious conversion of individuals from a minority faith to the dominant faith. It can also include the religious indoctrination of children into a dominant religion by their converted parents. However, religious assimilation need not involve wholesale adoption of a dominant religious belief system by a minority; the concept is broad enough to include alterations in the frequency of religious participation to match that of the dominant culture. Indeed, religious assimilation among immigrant groups most commonly involves such minor changes, rather than sweeping change in religious belief systems.

Human migration is the movement of people from one place to another, with intentions of settling, permanently or temporarily, at a new location (geographic region). The movement often occurs over long distances and from one country to another (external migration), but internal migration (within a single country) is the dominant form of human migration globally.

Migration is often associated with better human capital at both individual and household level, and with better access to migration networks, facilitating a possible second move. It has a high potential to improve human development, and some studies confirm that migration is the most direct route out of poverty. Age is also important for both work and non-work migration. People may migrate as individuals, in family units or in large groups. There are four major forms of migration: invasion, conquest, colonization and emigration/immigration.

A social issue is a problem that affects many people within a society. It is a group of common problems in present-day society that many people strive to solve. It is often the consequence of factors extending beyond an individual's control. Social issues are the source of conflicting opinions on the grounds of what is perceived as morally correct or incorrect personal life or interpersonal social life decisions. Social issues are distinguished from economic issues; however, some issues (such as immigration) have both social and economic aspects. Some issues do not fall into either category, such as warfare.

Exemplary for social issues was the so-called social question in the beginning of the industrial revolution. Growing poverty on one and growing population and materialistic wealth on the other hand caused tension between very rich and poorest people inside society.

Cultural amalgamation refers to the process of mixing two cultures to create a new culture. It is often described as a more balanced type of cultural interaction than the process of cultural assimilation. Cultural amalgamation does not involve one group's culture changing another group's culture (acculturation) or one group adopting another group's culture (assimilation). Instead, a new culture results. This is the origin of cultural amalgamation. It is the ideological equivalent of the melting pot theory.

The term cultural amalgamation is often used in studies on post–civil rights era in the United States and contemporary era to describe the process of multiple cultures blending into a new, unique culture. For instance, the cultural amalgamation process happened with the fall of the Roman empire when the Middle Ages started and Roman Jewish/Christian culture and Germanic tribal cultures mixed with each other in the European continent. In present day, cultural amalgamation occurs with immigration.

The Sudanese Greeks, or Greeks in Sudan, are ethnic Greeks from modern-day Sudan; they are small in number (estimated at around 150 in 2015), but still a very prominent community in the country. Historically, this diverse group has played a significant role in the political, economic, cultural, and sporting life of Sudan, as they have been one of the few European immigrant communities of considerable size and economic power.

Following cultural exchanges in ancient and medieval times, a few hundred Greeks – mostly military officers and traders – settled in the six decades after the 1820 Egyptian-Turkish conquest of what became modern Sudan. About one hundred of them stayed, either forcedly or deliberately, when the Ottoman occupiers were defeated by the local Mahdist forces in 1885. With the establishment of the Anglo-Egyptian Sudan in 1898, Greek merchants, administrators and artisans de facto became the stalwarts of the British-dominated colonial regime. By the time Sudan gained independence in 1956, their numbers had increased to around 6,000-7,000, but soon afterwards decreased, especially after the nationalisation of many businesses in 1969 and the introduction of Sharia law in 1983.

Immigration has been a major source of population growth and cultural change in the United States throughout much of its history. As of January 2025, the United States has the largest immigrant population in the world in absolute terms, with 53.3 million foreign-born residents, representing 15.8% of the total U.S. population—both record highs. While the United States represented about 4% of the total global population in 2024, 17% of all international migrants resided in the United States. In March 2025, the Federation for American Immigration Reform (FAIR) estimated that approximately 18.6 million illegal immigrants resided in the United States. In 2024, immigrants and their U.S.-born children number more than 93 million people, or 28% of the total U.S. population.According to the 2016 Yearbook of Immigration Statistics, the United States admitted a total of 1.18 million legal immigrants (618k new arrivals, 565k status adjustments) in 2016. Of these, 48% were the immediate relatives of United States citizens, 20% were family-sponsored, 13% were refugees or asylum seekers, 12% were employment-based preferences, 4.2% were part of the Diversity Immigrant Visa program, 1.4% were victims of a crime (U1) or their family members were (U2 to U5), and 1.0% who were granted the Special Immigrant Visa (SIV) for Iraqis and Afghans employed by the United States Government. The remaining 0.4% included small numbers from several other categories, including 0.2% who were granted suspension of deportation as an immediate relative of a citizen (Z13); persons admitted under the Nicaraguan and Central American Relief Act; children born after the issuance of a parent's visa; and certain parolees from the former Soviet Union, Cambodia, Laos, and Vietnam who were denied refugee status.

Between 1921 and 1965 policies such as the National Origins Formula limited immigration and naturalization opportunities for people from areas outside Northwestern Europe. Exclusion laws enacted as early as the 1880s generally prohibited or severely restricted immigration from Asia, and quota laws enacted in the 1920s curtailed Southern and Eastern European immigration. The civil rights movement led to the replacement of these ethnic quotas with per-country limits for family-sponsored and employment-based preference visas. Between 1970 and 2007, the number of first-generation immigrants living in the United States quadrupled from 9.6 million to 38.1 million residents. Census estimates show 45.3 million foreign born residents in the United States as of March 2018 and 45.4 million in September 2021, the lowest three-year increase in decades.

Foreign-born (also non-native) people are those born outside of their country of residence. Foreign born are often non-citizens, but many are naturalized citizens of the country in which they live, and others are citizens by descent, typically through a parent.

The term foreign born encompasses both immigrants and expatriates but is not synonymous with either. Foreign born may, like immigrants, have committed to living in a country permanently or, like expatriates, live abroad for a significant period with the plan to return to their birth-country eventually.

A border checkpoint is a location on an international border where travelers or goods are inspected and allowed (or denied) passage through. Authorization often is required to enter a country through its borders. Access-controlled borders often have a limited number of checkpoints where they can be crossed without legal sanctions. Arrangements or treaties may be formed to allow or mandate less restrained crossings (e.g. the Schengen Agreement). Land border checkpoints (land ports of entry) can be contrasted with the customs and immigration facilities at seaports, international airports, and other ports of entry.

The Semitic languages are a branch of the Afroasiatic language family. They include Arabic, Amharic, Tigrinya, Aramaic, Hebrew, Maltese, Modern South Arabian languages and numerous other ancient and modern languages. They are spoken by more than 460 million people across much of West Asia, North Africa, the Horn of Africa, Malta, and in large immigrant and expatriate communities in North America, Europe, and Australasia. The terminology was first used in the 1780s by members of the Göttingen school of history, who derived the name from Shem (שם), one of the three sons of Noah in the Book of Genesis.

Arabic is by far the most widely spoken of the Semitic languages with 411 million native speakers of all varieties, and it is the most spoken native language in Africa and West Asia. Other Semitic languages include Amharic (35 million native speakers), Tigrinya (9.9 million speakers), Hebrew (5 million native speakers), Tigre (1 million speakers), and Maltese (570,000 speakers). Arabic, Amharic, Hebrew, Tigrinya, and Maltese are considered national languages with an official status.

Ethnic groups in the Middle East are ethnolinguistic groupings in the "transcontinental" region that is commonly a geopolitical term designating the intercontinental region comprising West Asia (including Cyprus) without the South Caucasus, and also comprising Egypt in North Africa. The Middle East has historically been a crossroad of different cultures and languages. Since the 1960s, the changes in political and economic factors (especially the enormous oil wealth in the region and conflicts) have significantly altered the ethnic composition of groups in the region. While some ethnic groups have been present in the region for millennia, others have arrived fairly recently through immigration. The largest ethnic groups in the region are Arabs, Turks, Persians, Kurds, and Azerbaijanis but there are dozens of other ethnic groups that have hundreds of thousands, and sometimes millions of members.

Other indigenous, religious, or minority ethnic groups include: Antiochians, Armenians, Assyrians, Arameans in the Qalamoun Mountains, Baloch, Copts, Druze, Gilaks, Greeks (including Cypriots and Pontians), Jews, Kawliya, Laz, Lurs, Mandaeans, Maronites, Mazanderanis, Mhallami, Nawar, Samaritans, Shabaks, Talysh, Tats, Yazidis and Zazas.

Namibia, officially the Republic of Namibia, is a country in Southern Africa. Its borders include the Atlantic Ocean to the west, Angola and Zambia to the north, Botswana to the east and South Africa to the south; in the northeast, approximating a quadripoint, Zimbabwe lies less than 200 metres (660 feet) away along the Zambezi River near Kazungula, Zambia. Namibia's capital and largest city is Windhoek.

Namibia is the driest country in sub-Saharan Africa, and has been inhabited since prehistoric times by the Khoi, San, Damara and Nama people. Around the 14th century, immigrating Bantu peoples arrived as part of the Bantu expansion. From 1600 the Owambo formed kingdoms, such as Ondonga and Oukwanyama.

Throughout U.S. history, the country experienced successive waves of immigration, particularly from Europe and later on from Asia and from Latin America. Colonial-era immigrants often repaid the cost of transoceanic transportation by becoming indentured servants where the employer paid the ship's captain. In the late 19th century, immigration from China and Japan was restricted. In the 1920s, restrictive immigration quotas were imposed but political refugees had special status. Numerical restrictions ended in 1965. In recent years, the largest numbers of immigrants to the United States have come from Asia and Central America (see Central American crisis).

Attitudes towards new immigrants have fluctuated from favorable to hostile since the 1790s. Recent debates have focused on the southern border (see Illegal immigration to the United States and Mexico–United States border wall) and the status of "dreamers", people who illegally migrated with their families when they were children and have lived in the U.S. for almost their entire lives (see Deferred Action for Childhood Arrivals).

The demographics of Estonia in the 21st century result from historical trends over more than a thousand years, as with most European countries, but have been disproportionately influenced by events in the second half of the 20th century. The Soviet occupation (1944–1991), extensive immigration from Russia and other parts of the former USSR, and the eventual restoration of independence of Estonia, have all had a major effect on Estonia's current ethnic makeup. The influx was largely due to the country's troubled demographics and continued need for labour. After its independence, Estonia continued to bring in the needed labour power from the same countries as it did during the Soviet times.

The languages spoken in Estonia largely reflect the composition of the indigenous and immigrant ethnic groups residing in Estonia, and thus have changed with historical trends affecting the ethnic makeup of the country. Similarly to other northern European peoples, religion plays a rather small part in the lives of most Estonians.

Demographic features of the population of Lithuania include population density, ethnicity, level of education, health, economic status, and religious affiliations.

The population of Lithuania increased after the end of World War II, reaching its apex in 1991 with 3.7 million, but started to decline after the Dissolution of the Soviet Union later that year, which negatively impacted the country. As social problems ensued after the dissolution of the Soviet Union, the birth rate decreased and the population fell sharply due to a relatively high death rate, mass emigration and a large increase of its suicide rate that made Lithuania one of the countries with the highest suicide rates in the world. This caused its population to drop below 3 million in 2012, losing over a quarter of its population in 30 years. As of today, Lithuania's fertility rate is one of the lowest in the world. However, while its suicide rate would remain the highest in the European Union, it dropped over time, and in the 2020's, the Lithuanian population would return to grow slightly due to immigration and a decreasing death rate.

Population ecology is a field of ecology that deals with the dynamics of species populations and how these populations interact with the environment, such as birth and death rates, and by immigration and emigration.

The discipline is important in conservation biology, especially in the development of population viability analysis which makes it possible to predict the long-term probability of a species persisting in a given patch of habitat. Although population ecology is a subfield of biology, it provides interesting problems for mathematicians and statisticians who work in population dynamics.