The candidacies of Stephen Douglas and John C. Breckinridge in the 1860

presidential election showed:

answer: the split in the democratic party (apex)

Answer: The correct answer is : They showed The split in the Democratic Party.

Explanation: The division between the North and South Democrats Douglas and Breckinridge was very significant, particularly over slavery, and in the months following Lincoln's election seven southern states, led by South Carolina separated, preparing everything for the Civil War American. This year's elections were won by Republican Abraham Lincoln.