Following the Constitutional Convention's signing ceremony in Philadelphia on September 17, the finished document moved toward the states on September 18, beginning the fierce ratification debates between Federalists and Anti-Federalists. Those arguments, aired in pamphlets like The Federalist Papers, shaped how Americans would interpret their new government for centuries. Ratification required approval from nine of thirteen states, a threshold reached by June 1788.
The document that emerged from Philadelphia's Independence Hall replaced the weak Articles of Confederation with a stronger federal structure, but it was far from universally popular. Patrick Henry and other Anti-Federalists warned it created a distant, potentially tyrannical central government; they demanded a bill of rights as the price of their support.
Newspapers across the states printed the full text within days, an extraordinary feat of eighteenth-century media distribution. Alexander Hamilton, James Madison, and John Jay responded to critics with 85 essays collectively known as The Federalist Papers, arguing point by point for the new system.
The ratification fight took nearly a year and exposed deep regional and ideological divides that would echo through American history—between strong and weak central government, agrarian and commercial interests, slave and free states. Rhode Island, the last holdout, did not ratify until 1790, after the new government was already operating.