E. Just recently, since about 1970, the migration from the country to the towns has started to reverse.

The big German migrations to this area started around 1830 and continued quite strong for the rest of the century.

The migration started from early decades of 20th century and continued well into 1970s and 1980s.

Three days later the migration of animals started.

Such a migration is now starting for cars, electronics and other heavier industries as well.

Mass migration of people started in late 1950s.

By the 1990s, reverse migration started as families started returning home.

Their migration to the area starts in March.

Archeologists say the migration may have started much earlier and reached a climax at that time.

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