The war of <em>1812</em> impacted the United States by resulting in a surge of national pride.
This is because the war of 1812 was fought between the United States and Great Britain.
At the time, Great Britain was considered the best military in naval war, and the United States, which was then a new nation, was able to fight them to draw.
This created a sense of pride among the Americans and increased the spirit of nationalism among the citizens.
Also, the United States gained a lot of international respect.
Hence, in this case, it is concluded that the correct answer is option A. "It resulted in a surge of national pride."
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