Answer:
The Europeans brought many diseases with them that decimated Native American populations. Colonists and Native Americans alike looked to new plants as possible medicinal resources.
Answer:
The Great Plains had rivers which allowed various Native American tribes to camp along these rivers while they were following the buffalo. So again, the geography of the area provided this availability of food and places to stay and feed and water their horses.
Answer:
It should be A, Asians (specifically Chinese)
