Which of the following was true after the Civil War ended but before the 15th Amendment was passed? The South refused to allow black men to vote or participate in politics.

Southern whites encouraged the political participation of black men.

Black men in the South were able to vote and run for office before black men in the North.

Northern black men could vote before they could in the South.

The South refused to allow black men to vote or participate in politics.

Explanation:

Following the end of the American civil war in 1865. There was the ratification of the 14th Amendment that stated the Black or former slaves to be equal and have the same rights as Whites men in America.

However, the states in the South still refused to allow black men to vote or participate in politics until the 15th Amendment made it mandatory for every state in the country to allow people of color to votes particularly men.