<span>The answer
is letter C. Farmers. The Second Industrial Revolution had not been easy for
the agricultural sector despite the advancement in the machinery. During that
time many farmers have migrated towards urban centers due to promises of a better
job and higher wages. The ones left in the agricultural areas are farmers that
are already old, because of this the decline on the food and agricultural
supply occurred.</span>
Historians John Thornton and Linda Heywood of Boston University have estimated that of the Africans captured and then sold as slaves to the New World in the Atlantic slave trade, around 90% were enslaved by fellow Africans who sold them to European traders.
After The Union had defeated The Confederacy, the right to vote was guaranteed to all races. This was possible because the Union was in favor of equality.