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On May 4, 1776, Rhode Island, the colony founded by the most radical religious dissenters from the Puritans of Massachusetts Bay Colony, becomes the first North American colony to renounce its allegiance to King George III. Ironically, Rhode Island would be the last state to ratify the new American Constitution more than 14 years later on May 29, 1790.
Rhode Island mercantile strength caused almost as much trouble for the new American nation as it had the old British empire. Because it had independent wealth and trade coming through the two vibrant ports of Providence and Newport, Rhode Island was the only small state that could theoretically survive independent of the proposed federal union in 1787. The state had no desire to lose income in the form of import duties to the new federal government. As a result, Rhode Island was the last state to ratify the Constitution in 1790, when it was finally confronted with the prospect of the greater financial impositions it would suffer being treated as a foreign country from the United States.