Trace the changes in the North and in the federal government that caused it to abandon Reconstruction efforts, including the Compromise of 1877.

Lack of interest and end of federal interference.

Explanation:

Lack of interest and end of federal interference in southern affairs are the changes that occur in the North and in the federal government that caused it to abandon Reconstruction efforts. The Compromise of 1876 was the main factor that effectively ended the Reconstruction era. Southern Democrats' promises that they will protect civil and political rights of blacks were not be fulfilled, and the end of federal interference in southern affairs that leads to widespread disenfranchisement of blacks voters.

i would think it's industries and hydroelectric power

so what is your question?