The American Revolution began as tensions grew between the 13 British colonies in North America and the colonial government representing the British crown from 1754 to 1783. Key events exacerbating tensions included the Proclamation of 1763, which angered colonists by restricting settlement west of the Appalachians, and subsequent taxation acts including the Stamp Act and Townshend Acts, which the colonists opposed under the principle of "no taxation without representation." Armed conflict began with the Battles of Lexington and Concord in 1775 and the Declaration of Independence was adopted in 1776, formally establishing the United States. The Revolutionary War ended with the Treaty of Paris in 1783, recognizing American independence.