Only had 29% of the nation's population Only produced 10% of the nation's manufactured goods
Only had 29% of the nation's railroad mileage

These factors proved to be a major economic disadvantage for the ___ in the years leading up to the Civil War.
A) North
B) South
C) Border States
D) Western territories

South

Explanation:

Most of the work force was human based and not as technologically advanced as the North

i confess that there are several parts of this constitution which i do not at present approve, but i am not sure i shall never approve them: for having lived long, i have experienced many instances of being obliged by better information or fuller consideration, to change opinions even on important subjects, which i once thought right, but found to be otherwise. it is therefore that the older i grow, the more apt i am to doubt my own judgment, and to pay more respect to the judgment of others.

i would say your answer is a)

sorry if im wrong