The history of many countries has seen massive internal migration:

Census data can help us understand the massive daily migrations between where people live and where they work.

In the 6th century Octodurus became unsafe because of massive migrations.

A major reason for the massive migration to cities was the Partition of India.

However, it wasn't until the massive migration of Dominicans in the 1960s and 1970s that the music reached a mass audience.

The Helvetians were forming a massive migration straight through the provinces.

Among the results of this massive migration were new demands for racial justice.

It may seem remarkable that such a massive migration has gone unnoticed until now.

In the last half century, after several centuries' pause, massive migrations have started again on the planet.

Florida in the 20th century experienced a massive migration into the state.