To understand Abraham Lincoln's viewpoint on slavery, it would be important to _________.

analyze his appointment of so many military commanders
examine the Emancipation Proclamation and review why he supported of the 13th
Amendment
study his position about the economy in the election of 1860
read the Gettysburg Address

, where he emphasized the importance of equality and freedom for all individuals. Additionally, studying Lincoln's speeches and writings on the topic of slavery would provide insight into his personal beliefs and the actions he took as President to address the issue.