According to some historians which marks the beginning of the beginning of the u. s civil war

According to some historians, the Battle of Fort Sumter marked the beginning of the Civil War.

Explanation:

The Battle of Fort Sumter was a bombing carried out between April 12 and 13, 1861, by the army of the Confederate States of America with the intention of expelling the federal troops that occupied the fortification of Fort Sumter, located at the entrance to the bay of Charleston in South Carolina. The importance of this battle, which did not cause casualties, is that it was the plug that triggered the Civil War (1861-1865), the bloodiest conflict that occurred in the United States.