What did the presidential election of 1876 and the compromise of 1877 cause?

The Compromise of 1877 was an unwritten deal, informally arranged among United States Congressmen, that settled the intensely disputed 1876 presidential election. It resulted in the United States federal government pulling the last troops out of the South, and ending the Reconstruction Era.

confederacy: supported slavery, believed states should be able to nullify federal laws, supported low tariffs

union: everything else