The evaluation of how the Civil War fostered change in the United States economy in the period from 1861 to 1900 is there was industrialization, end of slavery, and creation of railroads.
This refers to the internal struggle that exists between different factions within a country, that is, without external invasion.
Hence, we can see that one of the aftereffects of the American Civil War on the American economy during the period 1861-1900 there was industrialization, the end of slavery, and the creation of railroads.
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