Assuming you're still referring to the Fifteenth Amendment, many critics pointed out that the newly-freed slaves lacked the proper amount of education to make informed voting decisions, and that it would be detrimental to the state to have them vote in general and local elections.
Answer:
Boycotts
Explanation:
I am not completely sure but here is my reasoning. Boycotts had more of an impact because they caused companies and businesses to lose customers. Thus, causing them to have less money to sustain their business. For example, the Montgomery bus boycotts. People of color and allies quit funding businesses because of segregation laws.
God is so powerful and merciful. Bless you !