Explanation:
The answer is B. African American men were granted the right to vote.
In the United State the economy was in the great depression in the 30's. There was a scare and many investors withdrew any investments. Now, we are in great debt to other countries.
When this happened U.S.A used the U.S.A airlift which they dropped food and fuel for the civilians <span />
In the natural world limiting factors like the availability of food, water, shelter and space can change animal and plant population