How was slavery protected by the constitution?

Slavery was protected by the U.S. Constitution primarily through provisions such as the Three-Fifths Compromise, which counted enslaved individuals as three-fifths of a person for representation and taxation purposes, and the Fugitive Slave Clause, which mandated that escaped enslaved individuals be returned to their owners. Additionally, the Constitution allowed for the continuation of the slave trade until 1808. These protections reflected the interests of slaveholding states and contributed to the entrenchment of slavery in American society.