the movement of large numbers of people over a fairly short time period.
Opposite-mass migration outwards/away from
urbanization
migration
Lemmings.
The first mass migration was the American Army that invaded Mexico and started the Mexican American War.
Great Puritan Migration
California Gold Rush
Migration from the latin Migratio
The great migration
Migration from the latin Migratio
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.
b mass migration