Question

Why did Lincoln decide to change his official stand on slavery?

a. because of antislavery sentiment at home and abroad
b. because he needed more soldiers to join the Union army
c. because western territories were threatening secession
d. because the South promised to reenter the Union

Answer 1

A. because of antislavery sentiment at home and abroad

Answer 2

"c. because western territories were threatening secession" would be the best option, but the better reason was because he could see that the war was going to continue regardless of slavery's fate, and he hated it from the start.