In the period before the outbreak of the Civil War, slavery dominated the economy of the Southern states, but failed to survive in the North. Which geographic factor helps explain the difference?
The Abolitionist Movement was more active in the North because the North was more densely populated.
The South's climate and landforms were more favorable to the plantation system than in the North.
Slaves found it easier to escape the North because of its dense forests
More slave ships arrived in Southern ports because the South had better natural harbors