After the war of 1812, the United States experienced a surge of NATIONALISM, or love of country.
The victory in the War of 1812 had a high psychological impact for American society, in a positive way. It was a kind of "confirmation" of the independence obtained before the same rival, to which he had once again managed to win. Nationalism and patriotic sentiment were on the top during that time.
The end of the war marked the beginning of the Era of Good Feelings, which passed between the presidencies of Jefferson and Andrew Jackson, in which there was a great economic growth of the country.
Answer:
The Emancipation Proclamation changed the meaning and purpose of the Civil War. The war was no longer just about preserving the Union— it was also about freeing the slaves. Foreign powers such as Britain and France lost their enthusiasm for supporting the Confederacy.
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