The Grandfather Clauses in the late 1800s prevented:
This was a voting requirement that required that for a person to be able to avoid other requirements for voting, their grandfathers should have been voters as well.
African Americans at that point only had grandfathers who had been enslaved and so could not vote. This meant that they were forced to go through other means to vote such as poll taxes and literacy tests.
Find out more on the grandfather clause at https://brainly.com/question/2248517.