quality:correction, structural:summarization
Acquisition of native lands

The War of 1812 marked the final confrontation involving major British and Native forces fighting to stop American expansion. The British war goal included the creation of an Indian barrier state under British auspices in the Midwest which would halt American expansion westward. American frontier militiamen under General Andrew Jackson defeated the Creeks and opened the Southwest, while militia under Governor William Henry Harrison defeated the Native-British alliance at the Battle of the Thames in Canada in 1813. The death in battle of the Native leader Tecumseh dissolved the coalition of hostile Native tribes. Meanwhile, General Andrew Jackson ended the Native military threat in the Southeast at the Battle of Horseshoe Bend in 1814 in Alabama. In general, the frontiersmen battled the Natives with little help from the U.S. Army or the federal government.

To end the war, American diplomats negotiated the Treaty of Ghent, signed towards the end of 1814, with Britain. They rejected the British plan to set up a Native state in U.S. territory south of the Great Lakes. They explained the American policy toward the acquisition of Native lands:

The United States, while intending never to acquire lands from the Indians otherwise than peaceably, and with their free consent, are fully determined, in that manner, progressively, and in proportion as their growing population may require, to reclaim from the state of nature, and to bring into cultivation every portion of the territory contained within their acknowledged boundaries. In thus providing for the support of millions of civilized beings, they will not violate any dictate of justice or humanity; for they will not only give to the few thousand savages scattered over that territory an ample equivalent for any right they may surrender, but will always leave them the possession of lands more than they can cultivate, and more than adequate to their subsistence, comfort, and enjoyment, by cultivation. If this is a spirit of aggrandizement, the undersigned are prepared to admit, in that sense, its existence; but they must deny that it affords the slightest proof of an intention not to respect the boundaries between them and European nations, or of a desire to encroach upon the territories of Great Britain. They will not suppose that that Government will avow, as the basis of their policy towards the United States a system of arresting their natural growth within their territories, for the sake of preserving a perpetual desert for savages.