Me answer these questions 1. how did divisions among the democrats lead to the election of republican abraham lincoln in 1860? 2. what event marked the start of war between the north and south?

1. The answer is Lincoln won with a minority of popular vote after the Northern and Southern Democratic candidates splitted the votes from the Democrats.
2. The event that started the American Civil War is when the Fort Sumter, located in Charleston harbor, South Carolina, was fired upon. The Confederates was the one who started firing, which happened on April 12, 1861.