Question

What occurred when federal troops withdrew from the South?

The Democrats lost power.

The Republicans came into power.

African Americans lost their rights.

Answer 1

As federal troops gradually withdrew from the South, black suffrage all but ended. The "Solid South" refers to the control of the Democratic party in the South. The major parts of the Compromise of 1877 were that the Democrats agreed to let Hayes win the presidential election, even though he did not win.

So its A.

Answer 2

What occurred when federal troops withdrew from the South?

African Americans lost their rights.