The Union was led by President Abraham Lincoln and included the Northern and Western states, as well as some Southern states that remained loyal to the Union. The Union's goal was to preserve the Union and end slavery.
The Confederacy was led by President Jefferson Davis and included the eleven Southern states that had seceded. The Confederacy's goal was to establish an independent nation and protect the institution of slavery.
The Civil War was one of the deadliest conflicts in American history, with an estimated 620,000 to 750,000 soldiers and civilians killed. The war ended with the defeat of the Confederacy and the abolition of slavery in the United States.