Final answer:
The delegates at the Virginia Convention believed that the 13th Amendment wasn't the only thing necessary for their protection because it did not address states' rights adequately.
Step-by-step explanation:
The delegates at the Virginia Convention believed that the 13th Amendment wasn't the only thing necessary for their protection because it did not address states' rights adequately. While the 13th Amendment officially and permanently banned slavery in the United States, it did not address the power of the states in relation to the federal government.
The delegates were concerned about the balance of power between the states and the federal government, and they believed that more specific protections were needed.