Making laws for society is an example of A. maintaining order
B. providing public services
C. supporting the economy
D. protecting territory

in 1862, president lincoln's emancipation proclamation opened the door for african americans to enlist in the union army. although many had wanted to join the war effort earlier, they were prohibited from enlisting by a federal law dating back to 1792.

explanation:

d.

the northwest territory became the most densely populated area in the u.s.