When it appeared that the war would resume, four of the New England colonies (Massachusetts Bay, Connecticut, New Haven, and Plymouth) formed a defensive compact known as the United Colonies of New England. Edward Winslow was already known for his diplomatic skills, and he was the chief architect of the United Colonies. His experience in the United Provinces of the Netherlands during the Leiden years was key to organizing the confederation. John Adams later considered the United Colonies to be the prototype for the Articles of Confederation, which was the first attempt at a national government.