Timeline of drafting and ratification of the United States Constitution Timeline of drafting and ratification of the United States Constitution The drafting of the Constitution of the United States began on May 25, 1787, when the Constitutional Convention met for the first time with a quorum at the Pennsylvania State House (now Independence Hall) in Philadelphia, Pennsylvania to revise the Articles of Confederation, and ended on September 17, 1787, the day the Constitution drafted by the convention's delegates to replace the Articles was adopted and signed. The ratification process for the Constitution began that day, and ended when the final state, Rhode Island, ratified it on May 29, 1790. In
Article Seven of the United States Constitution the Constitution would take effect. Rhode Island was the last state to ratify the Constitution under Article VII, doing so on May 29, 1790. On September 20, 1787, three days after its adoption by the Constitutional Convention, the drafted Constitution was submitted to the Congress of the Confederation for its endorsement. After eight days of debate, the opposing sides came to the first of many compromises that would define the ratification process. The Confederation Congress voted to release the proposed Constitution to the states for their consideration, but neither endorsed nor opposed its ratification. The Constitution was ratified by the