The Northern Whigs believed economic development would get rid of the need for slavery. Hence, Option B is the correct statement.
The Whigs preferred an activist monetary program called the American System, which was referred to as a shielding tariff, federal subsidies for the development of infrastructure, and aid for a countrywide bank.
Therefore, The Northern Whigs believed economic development would get rid of the need for slavery. Hence, Option B is the correct statement.
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