Answer:
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Britain effectively won the War of 1812 by successfully defending its North American colonies. But for the British, the war with America had been a mere sideshow compared to its life-or-death struggle with Napoleon in Europe.
Step-by-step explanation:
The War of 1812 came to an end largely because the British public had grown tired of the sacrifice and expense of their twenty-year war against France. Now that Napoleon was all but finally defeated, the minor war against the United States in North America lost popular support.