The Federalist Papers played a crucial role in gaining support for ratifying the Constitution by addressing concerns about the balance of power between the national government and the states. Specifically, the authors, primarily Alexander Hamilton, James Madison, and John Jay, argued that the Constitution would actually protect state rights rather than threaten them. They contended that a strong national government was necessary to maintain order and unify the states but that it would be limited by a system of checks and balances among the three branches of government (Executive, Legislative, and Judicial).
By explaining how these branches would monitor and limit each other's powers, the Federalist Papers reassured skeptics that no branch could dominate or infringe upon the rights of the states or individuals. This structure was designed to prevent tyranny and protect liberties, ultimately fostering support for the Constitution. Additionally, the Federalist Papers addressed specific fears about a central government by illustrating how states would retain significant powers and responsibilities, thereby alleviating concerns that the national government would harm the states.