Answer:
B: To grow subsistence crops
Explanation:
I just learned this recently, subsistence farming is when a farmer is using his crops to feed MAINLY his family, though when they have extras, they will sell it to locals. This is mainly the idea of a small family of farmers.
The answer is helped. Trade was foundational to the growth of cities because it helped. Guaranteed an exchange of goods and idea made reliance on other civilization possible showed military strength gave people jobs.
<span>Mary Maverick is the answer </span>
The federal government has no power over reservations