The South supported the spread of slavery due to economic reasons, while the North and West opposed it for economic disadvantage. The economic contrast influenced their perspectives on slavery's expansion.
The best statement describing why the South supported the spread of slavery while the North and West did not is:
“The North and West believed that the spread of slavery would be an economic disadvantage to them, while the South saw the spread of slavery as an economic boom.”
This fundamental economic difference in perception led to the South's support for slavery's expansion due to its reliance on slave labor for agriculture-based prosperity, contrasting with the North and West's industrial and economic concerns.
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