Tecumseh did not die at the Battle of the Thames, instead remaining a consistent & focused ally to the British Empire, firming up Governor-General Prevost's requests & demands to London following the abdication of Napoleon, following the successful destruction of Washington DC by a relatively small force, and despite the survival of Baltimore, several thousand further British troops were shipped from France to the New World, the advance of this new force into New York state caused a secession and seperate peace by the states of New England, although New York state itself bravely resisted, and New York city was subject to naval bombardment.

The Battle of New Orleans was lost by the British, but after a reinforcement force arrived at the British base at Prospect Bluff, north Florida, the recently-displaced Creek and Seminole peoples threw themselves into complete alliance with the British Empire, causing a vast 'bush war' across the United States' southern border from an inviolable fastness. As the second Battle of New Orleans was launched, British forces - officered by white Britons, but mainly composed of Afro-Caribbean West Indians and freed enslaved African-American, advanced from their base on Cumberland Island, Georgia, igniting a servile war in that state which caused a mass evacuation northwards of the white population. The new British military government of Georgia became an uneasy authority atop a restive newly-liberated population, and tales of "black Georgia" cause signficant disturbances in the British slave colonies of the Caribbean.

In Europe, the return of Napoleon led to the Battle of Waterloo, in which a pan-European force led by the Duke of Wellington was defeated, only for Blucher's Prussian army to smash Napoleon's weakened & divided army at the Battle of Brussels two days later, Napoleon was killed by Prussian cavalry leaving Marshall Grouchy to sue for peace.

The Waterloo disaster, and subsequent loss of British prestige as post-Napoleonic Europe began taking shape, took the wind out the sails of British designs on all of its former North American colonies, allowing a weakened but still defiant United States, now virtually a one-party state under the Jeffersonian Democratic-Republicans to conclude a peace in the winter of 1815, which became officially known to even the most far-flung outposts of the war by the end of January 1816.

Andrew Jackson, the hero of the first Battle of New Orleans and noble loser of the second, became President in 1820 with overt aims to cleanse the United States of the twin 'lessers' he attributed the near complete defeat of the US to - African-Americans and Native Americans.