What was the effect of the Emancipation proclamation for enslaved people?

It effectively destroyed slavery as the Union armies advanced south and conquered the entire Confederacy. The Emancipation Proclamation also allowed for the enrollment of freed slaves into the United States military. During the war nearly 200,000 blacks, most of them ex-slaves, joined the Union Army.

Explanation:

special interest groups must step back and let the process work itself out a representative can amend it at several points in the congressional staffers must do homework and report to the floor on what they 've learned

the answer is mass marketing.