The American Revolution was a conflict between the thirteen American colonies and Great Britain that lasted from 1775 to 1783. The colonies wanted independence from British rule due to unfair taxes and lack of representation in Parliament. Key events, like the Boston Tea Party and the Battle of Lexington, fueled the desire for freedom. In 1776, the colonies declared their independence with the Declaration of Independence, primarily written by Thomas Jefferson. The war involved many battles and alliances, including support from France. Ultimately, the colonies won their freedom, leading to the formation of the United States of America and a new government based on democratic principles.