Questions: What was the result of the Confederate attack on Fort Sumter, South Carolina, on April 12, 1861? President Lincoln called up militia to help put down the rebellion. The Civil War had begun.

The answer is: The Civil War had begun.

This option is partially correct. After the attack on Fort Sumter, President Lincoln did indeed call for 75,000 militia to suppress the rebellion. However, this action was a response to the attack and not the direct result of it.

This option is incorrect. There were no talks between President Lincoln and President Davis to avert war after the attack on Fort Sumter. The attack marked the beginning of open hostilities, and diplomatic efforts to resolve the conflict had already failed.

This option is correct. The Confederate attack on Fort Sumter is widely recognized as the event that marked the beginning of the American Civil War. The bombardment and subsequent surrender of the fort on April 13, 1861, led to a full-scale war between the Union and the Confederacy.

This option is incorrect. The Union forces at Fort Sumter, under Major Robert Anderson, were unable to repel the Confederate attack. After 34 hours of bombardment, Major Anderson surrendered the fort to Confederate forces, and it remained in Confederate hands until it was retaken by Union forces later in the war.