Answer:
As the war dragged on, the Union's advantages in factories, railroads, and manpower put the Confederacy at a great disadvantage. Nearly every sector of the Union economy witnessed increased production. ... This mechanization became even more important as many farmers left home to enlist in the Union military.
a) the fertile soil led to food surpluses, which supported a larger group of people
By 1860 the population had increased to 3,952,760 56 % of which were under the age 0f 20 This Statistic gives an indication of the large numbers of slaves
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