Which side had the advantage going into the battle of fort Sumter?

The Confederate forces had the advantage going into the Battle of Fort Sumter. They were better positioned, having seized control of key locations around the fort, and had a larger number of artillery pieces. Additionally, the Union forces, under Major Robert Anderson, were significantly outnumbered and lacked sufficient supplies and reinforcements. This strategic disadvantage ultimately led to the Confederate bombardment and the surrender of Fort Sumter on April 13, 1861.