How did the Colombian exchange alter the way native Americans of the Great Plains lived?

The Columbian exchange not only brought more people from overseas to take land, but it brought new animals and more diseases. The native Americans has to alter their way of living to attempt surviving diseases.

Contributing factors  leading  to the harlem renaissance were the great migration of african americans to northern cities, which concentratedambitious  people in places where they could encourage each  other, and the first world war, which had created new industrial work opportunities for tens of thousands of people.

Ibelieve the answer is (a) true.