What was one significant result of the war of 1812?

The war of 1812 was a 3-years long war between the Unite States and the British empire (+ its allies).
The most important result of the war was peace between USA and the British empire, and all the causes of the war had gone with its ending.

Hope this helps! :)

The answer to your question would be b

February 1848 is when it was added. if that's what you were asking