Question

an immediate result of lincolns election in 1860 was that
seven southern states seceded.
union forces attacked antietam.
the confederacy attacked fort sumter.
the union chose jefferson davis as its leader.

Explanation:

Lincoln's 1860 election, with his anti - slavery stance, led seven Southern states to secede immediately to protect their slave - based economies and way of life. The attack on Antietam occurred later in the Civil War. The Confederacy's attack on Fort Sumter was after the secessions. Jefferson Davis was the leader of the Confederacy, not the Union.

Answer:

A. seven Southern states seceded.