A few states agreed to ratify the constitution, only if what condition was met

One condition that was met for a few states to agree to ratify the Constitution was the addition of a Bill of Rights. These states, known as the Anti-Federalists, were concerned about the lack of specific individual rights protected in the original Constitution. They demanded a guarantee of individual liberties, and their support was crucial for the ratification process. Thus, the promise to include a Bill of Rights in the Constitution was instrumental in getting some states on board.