Fort Sumter
What a change now greets us! The Government is aroused, the dead North is alive, and its divided people united…The cry now is for war, vigorous war, war to the bitter end, and war till the traitors are effectually and permanently put down.
-Frederick Douglas, May 1861
The battle at Fort Sumter, South Carolina was held on an island in the Charleston harbor, but it isn't always considered an actual battle. During the battle, the Union held Fort Sumter and wouldn't let the Confederates resupply, which angered them. Because of this, the Confederate army demanded evacuation of the fort. The Union refused, causing the Confederates to open fire. The Union army surrendered to the Confederates, who captured the fort and won the battle.
Frederick Douglass was a former slave, and her was also known as the Father of the civil rights movement. He was completely against slavery and was a big part of the ending of slavery.