Answer:
15th Amendment-Lets African Americans Vote
19th Amendment-Lets women vote
26th Amendment-18 year olds and up can vote
Step-by-step explanation:
15th Amendment-After the Civil War, African Americans were granted the right to vote. This handed republicans the next few elections and led to backlash in the South after Reconstruction.
19th Amendment-Women are allowed to vote after years of protesting. Candidates began pandering to the women vote and it was the first step to full equality between men and women.
26th Amendment-18 year olds protested and used the slogan "Old enough to fight, old enough to vote" to reference the Vietnam War. The youth could now participate in politics and candidates began trying to turn out the youth vote.