The last New England state of the original 13 colonies to ratify the U.S. Constitution was Rhode Island. Rhode Island ratified the Constitution on May 29, 1790, after initially resisting ratification for more than a year and not sending delegates to the Constitutional Convention. It was the 13th and final state to ratify, coming well after the Constitution had already become effective with nine states' ratifications in 1788, including New Hampshire, the first New England state to ratify on June 21, 1788.
