they would accept royal governors as agents of the king, but they were no longer willing to recognize Parliament's right to pass legislation affecting the colonies. Most delegates opposed an attack on the British position in Boston, and the Continental Congress instead agreed to the imposition of a boycott known as the Continental Association. The boycott proved effective and the value of British imports dropped dramatically. The Thirteen Colonies became increasingly divided between Patriots opposed to British rule and Loyalists who supported it. American Revolution In response, the colonies formed bodies of elected representatives known as Provincial Congresses, and Colonists began to boycott imported British merchandise. Later in 1774, 12 colonies sent representatives to the First Continental Congress in Philadelphia. During the Second Continental Congress, the remaining colony of Georgia sent delegates as well. Massachusetts Governor Thomas Gage feared a confrontation with the colonists; he requested reinforcements from Britain, but the British government was not willing to pay for the expense of stationing tens of thousands of soldiers in the Thirteen Colonies. Gage was instead ordered to seize Patriot arsenals. He dispatched a force to march on the arsenal at Concord, Massachusetts, but the Patriots learned about it and blocked their advance. The Patriots repulsed the British force at the April 1775 Battles of Lexington and Concord, then lay siege to Boston. By spring 1775, all royal officials had been expelled, and the Continental Congress hosted a convention of delegates for the 13 colonies. It raised an army to fight the British and named George Washington its commander, made treaties, declared independence, and recommended that the colonies write constitutions and become states (later enumerated in the 1777 Articles of Confederation). The Second Continental Congress assembled in May 1775 and began to coordinate armed resistance against Britain. It established a government that recruited soldiers and printed its own money. General Washington took command of the Patriot soldiers in New England and forced the British to withdraw from Boston. In 1776, the Thirteen Colonies (now self referenced as states) declared their independence from Britain. With the help of France and Spain, they defeated the British and their German allies in the American Revolutionary War, with the final battle usually being referred to as the Siege of Yorktown in 1781. In the Treaty of Paris (1783), Britain officially recognized the independence of the United States of America. Thirteen British Colonies population The colonial