Answer:
b. rejected the concept that the federal government would protect the rights of all Americans.
Step-by-step explanation:
The compromise struck by Hayes´ Republicans and Southern Democrats led to the the Republican agreement to withdraw all remaining troops from the South, consolidating the Democratic control there. Democratic promises to respect the rights of African Americans were not observed. The legal and political situation of black people worsened in southern states following the Compromise of 1877. It marked the end of the Reconstruction Era.