What is the purpose or overall message of this image?

When lincoln was first elected president, he hoped to prevent war by allowing (1) in the united states.

Two of these describe "federalism." (choose two answers) select one or more: a. the national government absolutely controls all state governments. b. power is shared by the national and state governments. c. state governments exercise absolute power over the national government. d. it is a compromise meant to eliminate the disadvantages of a "unitary" and a "confederate" system.

What did hiram rhodes revels argue for in the senate