How did the Compromise of 1877 affect the political participation of African Americans?

Southern legislatures, which were given power in the compromise, failed to persecute the Ku Klux Klan.
The Freedmen's Bureau, which encouraged civic programs for freed slaves, was given more funding.
The military, which had protected African American rights, was removed from the South.
The president, who was a Southern Democrat, began to oversee a rollback of African American rights.

Question

How did the Compromise of 1877 affect the political participation of African Americans?

 Southern legislatures, which were given power in the compromise, failed to persecute the Ku Klux Klan.
 The Freedmen's Bureau, which encouraged civic programs for freed slaves, was given more funding.
 The military, which had protected African American rights, was removed from the South.
 The president, who was a Southern Democrat, began to oversee a rollback of African American rights.