<span>B. Jazz became popular.
C. Many African Americans moved to cities in the North.</span>
Answer: A failing school not paying taxes to keep themselves running
D. Free elections were held for the first time
... discourage African Americans from voting.
Poll taxes means you have to pay a tax before allowed to vote. That's a way of preventing poor persons (like blacks in the South) from voting.
In addition to poll taxes, other measures were also used to block blacks from participating in the voting process. For instance, literacy tests would require persons to pass certain standards of reading and writing in order to qualify for voting. These tests were aimed at blacks, who had not had access to the same education as whites.
