Answer:
The Emancipation Proclamation and the efforts of African American soldiers affected the course of the war in that all slaves would be freed after the war, it increased the North's will to win the war,
Explanation:
it increased the North's will to win the war, and it gave the North a reason to keep fighting and to win the Civil War.
Co-exstitence this is because with out one u can't have the other
I believe the answer you're looking for is "The columbian exchange." Hope this helps.
