Because the Slaves that worked in the industries were freed by the emancipation proclamation
Only one dies in the expoedition,Sergeant Floyd
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Small-scale agriculture is an alternative to factory farming or more broadly, intensive agriculture or unsustainable farming methods that are prevalent in primarily first world countries.
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The economic base in the North and South varied substantially. The South was primarily agricultural and relied primarily on the labor of the enslaved as the driving engine of the economy. In the North, non-slave, free labor created an industrial base founded on industry, factories and maritime culture.
