PLS HELP TIMED After Abraham Lincoln's election, southern states began to
a. oppose his Presidency
b. claim voter fraud
c. secede from the Union
d. declare war

c. secede from the Union

Explanation:

Seven Southern states seceded following Lincoln's election because, though Lincoln promised not to eradicate slavery, he was inhospitable to the spread of slavery in future states.  

honestly it just comes down to the

d.summerains, the last one