Answer:
Correct answer are
b. The North developed a commerce-based economy, while the South developed an agricultural economy.
d. The North was heavily industrialized and the South was not.
Explanation:
B is correct, because due to technological improvements, North was involved in commerce and trading, and the South due to slavery focused on agriculture.
D is correct answer, because during this period process of industrialization and technological improvements were seen all around the North, and that is why North differ that much from the South, whose economy was based on production of cotton and some other agricultural products, and where the work force was based on slaves.
A is not correct as in the North they didn't focus on agriculture that much.
C is not correct as there were no indentured servants in the North.
