The primary military conflict during the American Revolution was the struggle between the thirteen American colonies and Great Britain, which lasted from 1775 to 1783. The colonies sought independence, fueled by grievances such as taxation without representation and British military presence. Key battles, including Lexington and Concord, Bunker Hill, Saratoga, and Yorktown, defined the conflict, with notable figures like George Washington leading the Continental Army. The revolution culminated in the Treaty of Paris in 1783, which recognized American independence and marked a significant shift in political power, inspiring future democratic movements worldwide and shaping the principles of liberty and governance.