Final answer:
The Anti-Federalists would have been the most in favor of the first amendments to the Constitution, passed in 1791.
Step-by-step explanation:
The group that would have been most in favor of the first amendments to the Constitution, passed in 1791, would have been the Anti-Federalists. The Anti-Federalists were a group of individuals who opposed the Constitution because they believed it concentrated too much power in the hands of the federal government and did not adequately protect individual rights and liberties.
They demanded the inclusion of a bill of rights as a condition for accepting the Constitution. Several states made the passing of a bill of rights a requirement for their acceptance of the Constitution.