chain migration

Depends on what you mean... but I'll try.

There is migration, chain migration, forced migration, voluntary migration, net-in migration, net-out migration, immigration, emmigration, countermigration.

These are Human Geographic terms by the way. That makes about 9 types of migration.

Chain Migration

Chain migration, or serial migration, refers to the mechanism by which foreign nationals immigrate by virtue of family reunification. A migration process which depends on a small number of pioneers, who make the first moves to set up a new home in a new place. They send information back home, and this encourages further migration from the originating areaPlease add a trust point - thank you.

This means push really hard up in there ;)