Emigration in the context of "Japanese diaspora"

The Greeks in Turkey constitute a small population of Greek and Greek-speaking Eastern Orthodox Christians who mostly live in Istanbul, as well as on the two islands of the western entrance to the Dardanelles: Imbros and Tenedos (Turkish: Gökçeada and Bozcaada). Greeks are one of the four ethnic minorities officially recognized in Turkey by the 1923 Treaty of Lausanne, together with Jews, Armenians, and Bulgarians.

They are the remnants of the estimated 200,000 Greeks who were permitted under the provisions of the Convention Concerning the Exchange of Greek and Turkish Populations to remain in Turkey following the 1923 population exchange, which involved the forcible resettlement of approximately 1.2 million Greeks from Anatolia and East Thrace and of half a million Turks from all of Greece except for Western Thrace. After years of persecution (e.g. the Varlık Vergisi, the Istanbul Pogrom and the 1964 expulsion of Istanbul Greeks), emigration of ethnic Greeks from the Istanbul region greatly accelerated, reducing the Greek minority population from 119,822 before the 1955 pogrom to about 7,000 by 1978. The 2008 figures released by the Turkish Foreign Ministry places the current number of Turkish citizens of Greek descent at the 3,000–4,000 mark.However, according to the Human Rights Watch the Greek population in Turkey is estimated at 2,500 in 2006. The Greek population in Turkey is collapsing as the community is now far too small to sustain itself demographically, due to emigration, much higher death rates than birth rates and continuing discrimination.

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.

The African diaspora refers to the worldwide collection of communities that descended from people from Africa. The term most commonly refers to emigrants of people of African heritage. Scholars typically identify "four circulatory phases" of this migration out of Africa. The first phase includes the ancient migrations of early humans out of Africa, which laid the foundations for the global human population. The second phase centers on the transatlantic slave trade between the 16th and 19th centuries, during which millions of Africans were forcibly relocated to the Americas, Europe, and the Caribbean. This period significantly shaped the cultural, social, and economic landscapes of many countries. The third phase involves voluntary migrations during the 19th and 20th centuries, often driven by economic opportunities, colonialism, and political upheaval. Lastly, the contemporary phase includes ongoing migrations in the 20th and 21st centuries, characterized by globalization and the pursuit of education, employment, and asylum. The African diaspora has contributed profoundly to global culture, politics, and identity, influencing music, cuisine, language, and social movements worldwide.

The phrase African diaspora gradually entered common usage at the turn of the 21st century. The term diaspora originates from the Greek word διασπορά (diaspora, "scattering") which gained popularity in English in reference to the Jewish diaspora before being more broadly applied to other populations. Less commonly, the term has been used in scholarship to refer to more recent emigration from Africa.

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.

The Greeks in Georgia (Georgian: ბერძნები საქართველოში, romanized: berdznebi sakartveloshi; Greek: Έλληνες στην Γεωργία, romanized: Éllines stin Georgía), which in academic circles is often considered part of the broader, historic community of Pontic Greeks or—more specifically in this region—Caucasus Greeks, is estimated at between 15,000 and 20,000 people to 100,000 (15,166 according to the latest census) down from about 100,000 in 1989. The community has dwindled due to the large wave of repatriation to Greece as well as emigration to Russia, and in particular Stavropol Krai in the North Caucasus region of southern Russia. The community has established the Union of Greeks in Georgia and there is a cultural centre and a newspaper entitled Greek Diaspora.

Area studies, also known as regional studies, is an interdisciplinary field of research and scholarship pertaining to particular geographical, national/federal, or cultural regions. The term exists primarily as a general description for what are, in the practice of scholarship, many heterogeneous fields of research, encompassing both the social sciences and the humanities. Typical area study programs involve international relations, strategic studies, history, anthropology, political science, political economy, cultural studies, languages, geography, literature, and other related disciplines. In contrast to cultural studies, area studies often include diaspora and emigration from the area.

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.

Social justice is justice in relation to the distribution of wealth, opportunities, and privileges within a society where individuals' rights are recognized and protected. In Western and Asian cultures, the concept of social justice has often referred to the process of ensuring that individuals fulfill their societal roles and receive their due from society. In the current movements for social justice, the emphasis has been on the breaking of barriers for social mobility, the creation of safety nets, and economic justice. Social justice assigns rights and duties in the institutions of society, which enables people to receive the basic benefits and burdens of cooperation. The relevant institutions often include taxation, social insurance, public health, public school, public services, labor law and regulation of markets, to ensure distribution of wealth, and equal opportunity.

Modernist interpretations that relate justice to a reciprocal relationship to society are mediated by differences in cultural traditions, some of which emphasize the individual responsibility toward society and others the equilibrium between access to power and its responsible use. Hence, social justice is invoked today while reinterpreting historical figures such as Bartolomé de las Casas, in philosophical debates about differences among human beings, in efforts for gender, ethnic, and social equality, for advocating justice for migrants, prisoners, the environment, and the physically and developmentally disabled.

Shrinking cities or urban depopulation are dense cities that have experienced a notable population loss. Emigration is a common reason for city shrinkage. Since the infrastructure of such cities was built to support a larger population, its maintenance can become a serious concern. A related phenomenon is counterurbanization.