This was the start of the Civil War because the South didn't like him because he wanted to stop slavery.
The Southern states quickly annexed and formed the Confederate States.
The first fight of the Civil War was at Fort Sumter in South Carolina between the Union and the Confederate State and it was where the first shot of the Civil War was. It was the battle that stared the war.
Abraham Lincoln made a blockade blocking the ports of where ships come in to import goods for the south. That caused them [the South] a great deal of damage for them because they needed the imported goods for their soldiers to eat and weapons and other goods.
This would be called the "Bloodiest Day" in American History because in only a day 22,717 people died, wounded, captured, or missing.
President Lincoln freed 50,000 slaves instantly free. As the Union advanced, more than 3 million more slaves were freed. It was done right after the battle of Antietam.
It was the only battle fought in the North because Robert E. Lee decided to attack them in the North. It was the Robert E. Lee's first lost. 165,620 American soldiers fought in the battle and 7,863 people had been killed.
Abraham Lincoln got re-elected to be president again and was president for one more year until the Civil War ended and got assassinated.
Slavery was abolished when the United State Congress agreed to pass the 13th Amendment. It stopped slavery.
The South surrendered and the North won. This was also the end of the Civil War.
General Robert E. Lee surrendered to Union general Ulysses S. Grant at the Appomattox Courthouse.