It is B, the stamp act. Hope this helps! ^^
The Northern and Southern economies were very different in the decade prior to the Civil War.
Northern economy
At this time, the Northern economy was heavily influenced by industrialization. Northern cities focused predominantly on the development of manufactured goods thanks to the new organization systems and technological developments taking place during the middle of the 19th century.
Southern economy
The Southern economy was dominated by one cash crop, cotton. Cotton became "King" at this time, as the invention of the cotton gin increased the profit plantation owners could make off this product. This resulted in the Southern economy lacking in industrialization and transportation networks, making it completely different than the North.
As mechanization increased crop yields, overproduction caused crop values to decline.
