What and why did George mason require before Virginia would be ratify constitution?

George Mason insisted on the inclusion of a Bill of Rights as a prerequisite for Virginia's ratification of the U.S. Constitution. He believed that the original Constitution lacked sufficient protections for individual liberties and fundamental rights. Mason argued that without explicit guarantees, citizens could be vulnerable to government overreach and tyranny. This demand ultimately influenced the adoption of the Bill of Rights in 1791.