Why was lincoln determined to keep the border states in the union?

a.)they were needed to protect the capital.

b.)they contained most of the south's large plantations.

c.)they had all voted to secede by narrow margins.

d.)they contained the most of the south's commercial harbors.

It IS choice A. because Lincoln wanted to protect the union's capital since it was a major moral and strategic advantage.

                            HOPE THIS HELPS GOOD LUCK IN SCHOOL

A. They were needed to protect the capital

Just took test.

the supreme court can hear any case it wishes as long as four justices agree to hear it.

hope this , give me brainliest answer =j