From 1765, a series of disputes with Parliament over taxation led to the American Revolution, first to informal committees of correspondence among the colonies, then to coordinated protest and resistance, with an important event in 1770, the Boston Massacre. A standing army was formed by the United Colonies, and independence was declared by the Second Continental Congress on 4 July 1776. A new nation was born, the United States of America, and all royal officials were expelled. On their own the Patriots captured a British Invasion army and France recognized the new nation, formed military alliance, declared war on Britain, and left the superpower without any major ally. The American War of Independence continued until 1783, when the Treaty of Paris was signed. Britain recognised the sovereignty of the United States over the territory bounded by the British possessions to the North, Florida to the South, and the Mississippi River to the west.