Question

What was The Great Migration?

A massive headache.
The time when former slaves moved North after the Civil War.
When birds begin to fly south in the winter.
When large amounts of immigrants came to America for a better future.

Answer 1

The time when former slaves moved North after the Civil War

Step-by-step explanation:

A massive headache is a migraine, birds just always move south for the winter so it's just called migration, and immigration was the name for when people from their country of origin to different country.