c. emancipate enslaved african americans and end the issue of slavery forever
The 3/5ths compromise was the law that designated how slaves were to be treated and represented. Previously an African American was counted as only 3/5ths of a person, hence the name of the compromise.
The answer to your question is,
They met in Potsdam, Germany, from July 17 to August 2, 1945, to negotiate terms for the end of World War II.
-Mabel <3