Answer:
By the 1930s the African American population of the Midwest and Northeast had more than doubled since 1900.
Explanation:
Given that the African-American population in the aforementioned regions was 500,000 people in 1900, and said population increased to 1,250,000 30 years later, to determine the population growth rate during that period, the following calculation must be performed:
1,250,000 / 500,000 = X
2.5 = X
Thus, the African-American population in these regions increased by 2.5, that is, more than doubled during that period of time.
