Final answer:
The Constitutional Convention resolved the issue of slavery through compromises such as the Three-Fifths Compromise. An amendment to the Constitution was also passed to abolish slavery.
Step-by-step explanation:
The Constitutional Convention resolved the issue of slavery through various compromises. One of these compromises was the Three-Fifths Compromise, which counted each enslaved person as three-fifths of a person for purposes of both representation and taxation. Another compromise addressed the slave trade, with an agreement reached that it would not be stopped before 1808. Additionally, an amendment to the Constitution was passed in 1865 that abolished slavery across the entire United States.