Question

what does it mean to say that indo - europeans migrated in waves?

Explanation:

Saying Indo - Europeans migrated in waves means they did not move all at once. Instead, there were multiple successive groups or 'waves' of migration over different time - periods. Each wave likely had its own characteristics, such as different starting points, routes, and reasons for migrating.

Answer:

It means there were multiple successive groups of Indo - Europeans moving at different times rather than a single, unified migration.