Economically, why was slavery common in the southern states but not the northern states? a) the south needed the slave population to grow labor-intensive tobacco, cotton, and rice. b) the north needed the slave population to manufacture industrial goods in factories. c) the climate of the north was too cold for the slave population to thrive. d) the topography of the south was similar to the conditions in africa.

How did the war of 1812 contribute to an increase in u.s. manufacturing? a) the war provided more resources for factories to increase production. b) the war promoted trade between countries so that americans could focus on fighting. c) the war cut americans off from their previous supply of imported manufactured goods. d) the war limited transportation in america, making it necessary to import manufactured goods.