Facts about the African Americans war in the civil war

In the war, both sides used African Americans for military purposes; in the South as slave labor and in the north as wage labor and military volunteers. Over 100,000 ex-slaves fought for the Union and over 500,000 fled their plantations for Union lines.

(happy to help)

Explanation:

Check this link, it has very interesting fact ;P

https://www.history.com/topics/american-civil-war/black-civil-war-soldiers

b.europe i believe because north america has 3 countries in a way and with all the stuff with illegal immagrants from mexico or whatever so i would say europe.

answer; ///i believe that the correct answer is (a) the great depression