Annapolis Convention, 1786, interstate convention called by Virginia to discuss a uniform regulation of commerce. It met at Annapolis, Md. With only 5 of the 13 states—Delaware, New Jersey, New York, Pennsylvania, and Virginia—represented, there could be no full-scale discussion of the commercial problems the nation faced as a result of the weak central government under the Articles of Confederation. The main achievement of the convention was the decision to summon a new meeting for the express purpose of considering changes in the Articles of Confederation to make the union more powerful. An address was drawn up by Alexander Hamilton and was sent to all the states, asking them to send delegates to Philadelphia in May, 1787. The move was extraconstitutional, but Congress passed a resolution urging attendance. The call from Annapolis was heeded and delegates from 12 states met. From that Federal Constitutional Convention was to emerge the Constitution of the United States.