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
Amendments to the Constitution of Canada following table, many important changes were made to the constitutional structure of Canada by adding entire extra documents to the Constitution. These include orders that added provinces to Canada, such as the "British Columbia Terms of Union" and documents that altered the structure of the government of Canada, such as the "Parliament of Canada Act, 1875". For a complete list of documents added to the Constitution before 1982, see List of Canadian constitutional documents. Amending the Constitution has been a topic of much debate in contemporary Canada, and the two most comprehensive attempts to revise the document have both been