Answer:
D. It's Better suited for an Arid Climate
It's asking how the westward expansion effected the native americans. A lot of it resulted in many native americans losing their homelands & being violently suppressed. They were forced out of the regions where they lived. A lot were killed from battles & diseases (diseases brought from the europeans). They wanted to keep their land that was being taken from them, hence the reason for the battles which resulted in many native americans lives being lost.
Hope that helped a bit.
answer A is the correct answer :)
D: Their cavalry, fighting from horseback, unlike the Chinese who were not as well trained.
