Answer:
Option: helped ensure a degree of fairness in treatment of African-American citizens.
Explanation:
Before the Civil War in America, the African American allowed to vote in the North but never selected in the office. During the Reconstruction period, the African Americans not only allowed to vote but to elect in the offices who saw after the needs and the rights of the African American communities. It is expected that about two thousand African Americans held office during this period.
Roosevelt proposal to add one new justice to the Supreme Court for every justice over age seventy.
D it was in the south mostly in oklahoma