History of the United Kingdom Britain as the world's dominant colonial power. During the 1760s and 1770s, relations between the Thirteen Colonies and Britain became increasingly strained, primarily because of opposition to Parliament's repeated attempts to tax American colonists without their consent. Disagreement turned to violence and in 1775 the American Revolutionary War began. In 1776 the Patriots expelled royal officials and declared the independence of the United States of America. After capturing a British invasion army in 1777, the US formed an alliance with France (and in turn Spain aided France), evening out the military balance. The British army controlled only a handful of
United States Declaration of Independence Parliament was the legislature of Great Britain only, and that the colonies, which had their own legislatures, were connected to the rest of the empire only through their allegiance to the Crown. The issue of Parliament's authority in the colonies became a crisis after Parliament passed the Coercive Acts (known as the Intolerable Acts in the colonies) in 1774 to punish the colonists for the Gaspee Affair of 1772 and the Boston Tea Party of 1773. Many colonists saw the Coercive Acts as a violation of the British Constitution and thus a threat to the liberties of all of British