Final answer:
Southern legislators made it harder for African Americans to vote in elections during Reconstruction by implementing poll taxes and literacy tests.
Step-by-step explanation:
During Reconstruction, Southern legislators implemented two main measures to make it harder for African Americans to vote in elections. The first measure was the implementation of poll taxes, which required voters to pay a special fee before voting. This prevented many African Americans, who often could not afford the tax, from voting. The second measure was the use of literacy tests, where voters had to demonstrate a minimum standard of knowledge. These tests were designed to be more difficult for African Americans and were used to disenfranchise them.