Tensions erupted into battle between Patriot militia and British regulars when the British attempted to capture and destroy Colonial military supplies at Lexington and Concord in April 1775. The conflict then developed into a global war, during which the Patriots (and later their French, Spanish, and Dutch allies) fought the British and Loyalists in what became known as the American Revolutionary War (1775–83). Each of the thirteen colonies formed a Provincial Congress that assumed power from the old colonial governments and suppressed Loyalism, and from there they built a Continental Army under the leadership of General George Washington. The Continental Congress determined King George's rule to be tyrannical and infringing the colonists' rights as Englishmen, and they declared the colonies free and independent states on July 2, 1776. The Patriot leadership professed the political philosophies of liberalism and republicanism to reject monarchy and aristocracy, and they proclaimed that all men are created equal.