One thing that made foreign goods more expensive and allowed for Northern goods to be competitive was d. the 1812 ban of imports.
Why were imports banned in 1812?
In the War of 1812, the Americans were at war with the British and so were not buying their products.
As Britain was a major trading partner, this allowed the North to fill in the gap by producing their own goods which became more competitive.
Find out more on the War of 1812 at https://brainly.com/question/14301560.
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