An immediate result of lincoln’s election in 1860 was that
a seven southern states seceded.
b union forces attacked antietam.
c the confederacy attacked fort sumter.
d the union chose jefferson davis as its leader.

The correct answer is A. An immediate result of Lincoln's election in 1860 was that seven Southern states seceded.

Explanation:

In 1860 Lincoln secured his candidacy for the presidency of the United States by the Republican Party. Although he barely had support from the southern states, defenders of slavery, he swept north and was named president in 1860. Before even reaching the White House, his victory and lack of agreement on the essential issue of slavery caused that seven southern states split off to create the Confederate States of America.