For questions about the process and records associated with movement of people (whether individuals, families or populations) from one location to another, usually on a permanent basis, especially within a country

Migration is the movement of people from one location to another. They may move individually, in family groups or in whole populations (termed mass migration).

The relocation is usually on a permanent basis and the term is not usually applied to those following a nomadic lifestyle involving a cyclic pattern of movement.

A migrant leaving his or her previous home is called an emigrant and then referred to as an immigrant in the new land.

The development of new transport technologies made large-scale international migration possible.

At different times, governments have made migration an instrument of policy for managing population. This might be by encouraging the immigration of desired settlers or by the forced removal or suppression of others.

http://www.oxforddictionaries.com/definition/english/migration says:

Movement of people to a new area or country in order to find work or better living conditions: the extensive rural-to-urban migration has created a severe housing shortage

and are related tags. Use these tags for questions about the process and records associated with:

  • : people entering and settling in a country or place to which they were not native.
  • : people leaving the country or place where they were born in order to settle in a new country.