The War of 1812!
Take our sailors and we'll take your soldiers!
Causes:
The Treaty of Ghent
Andrew Jackson
The Hartford Convention
The Hartford Convention was a secret meeting in Connecticut of Federalists from Connecticut, Rhode Island, Massachusetts, New Hampshire and Vermont who disagreed with James Madison’s views and progression during 1812.
Major Engagements:
August 16th, 1812: American General William Hull was forced to completely surrender Fort Detroit after realizing how large the English/Indian forces going against the settlement were. The regular US Army men were taken as prisoners to Canada, and Michigan was added to Britain's territory.
January 8th-January 18th: The "most one sided" fight of the war of 1812, concluded in a victory for the United States. This specific encounter was fought after the treaty was signed and the war was "officially over", but word didn't travel to either side until after.