The War of 1812 was a military conflict that lasted from June 18, 1812, to February 18, 1815, fought between the United States of America and the United Kingdom, its North American colonies, and its North American Indian allies. Historians in the United States and Canada see it as a war in its own right, but Europeans often see it as a minor theatre of the Napoleonic Wars. By the war's end in early 1815 the key issues had been resolved and peace came with no boundary changes.