When people migrate the population that they left becomes smaller. When these people migrate to where they are going to that population becomes larger.
they would die
Lack of food (for one) will make people migrate. Also, weather or temperature will make people migrate.
its hard for people to migrate because of money
I don't know! I want to know what happens to whales if they don't migrate too!
they do both, people also migrate to France.
Most birds migrate in the winter or fall because it is too cold for them. If they did not migrate, they could freeze! When birds migrate they fly and fly until they reach a place that is not so cold.
They didn't migrate. They had an empire of 15,000 people.
People may migrate from one region to another for economic opportunity. Other people migrate because they have family in different areas.
well when people migrate they can be illeagal in some places like Mexico
It'd die.
sure!
they ussaly migrate from poor countries such as India and china