Answer:
The withdrawal of federal troops from the South, is the right answer.
Step-by-step explanation:
An informal compromise between the allies of the Republican Rutherford Hayes and the southern Democrats to settle the outcome of the presidential election of 1876 and put an end to the Reconstruction era, came to be known as the Compromise of 1877. For keeping the terms of the Compromise the federal government of the United States called off the last troops out of the South.