Answer:
passing new voting requirements.
Step-by-step explanation:
By passing new voting requirements the black Americans where disenfranchised all stopped from being able to vote in the United States by the southern Democrats.
New laws, constitutions and several new practices were put in place by these Democrats on purpose just to disenfranchise the blacks. They did this to stop them from voting and also to stop them from registering in order to be able to vote.