What is "internal migration"

n. (context geography English) Permanent movement within a particular country

Internal migration refers to human migration within one geopolitical entity, usually a nation-state. Reasons for internal migration tend to be different from those for cross-border migration; whereas the latter often occurs primarily for political or economic reasons, reasons for internal migration prominently include travel for education and for economic, but not for political, reasons. A general trend of movement from rural to urban areas has also produced a form of internal migration, leading to rapid urbanization in many countries.

The history of many countries has seen massive internal migration:

• The United States saw a massive internal migration from the eastern states toward the west coast during the mid-19th century, a similar large-scale migration of African Americans from the agricultural south to the industrialized northeast in the early to mid-twentieth century and a large-scale reverse migration of African Americans from other parts of the country to the urban south beginning in the late 20th century and continuing to the present.
• The United Kingdom has historically seen several migrations from the north of England to the south, and also from Scotland, Ireland (more recently Northern Ireland) and Wales to England. This was most prevalent during the industrial revolution, and also in the aftermath of the Irish potato famine.
• In New Zealand, the drift to the north has seen the South Island gradually lose population to the main urban area, Auckland, in the country's far north.
• In Philippines, due to a centralized government and almost unequal distribution of government power and funds, people from the provinces head to Metro Manila to look for better jobs and opportunities. This has been continuing since then, although in small numbers.
• In Italy, the northern and central regions experienced waves of immigrants coming from the southern regions, due to the southern portion of the country remaining somewhat underdeveloped and stricken with poverty. This has already ceased due to the southern regions' condition improving, yet a few still drift to the north.