On April 12, 1861, the American Civil War started, a war between citizens in the same country. The northern side was called the Union and the southern states were called the Confederate states.
The war started because there were differences about slavery, trade, and tariffs between the north and south that could not be compromised.
The Union general was Ulysses S. Grant and the Confederate general was Robert E. Lee. They both held the highest rank in their respective armies, had known each other during the Mexican War.
Hooray!!! We're free!!!
In 1865 in Appomattox, Virginia, General Robert E. Lee surrenders his 28,000 troops to Union General Ulysses S. Grant.
General Lee was forced to abandon the Confederate capital of Richmond, was blocked from joining the surviving Confederate force in North Carolina, and was harassed by he Union cavalry. He was left with no choice but to surrender.
The American Civil War then came to an end, slavery was abolished months later, and 4 million slaves were freed.