Which side had the advantage of having more miles of railroad tracks in 1860? U. S. (North) or the Confederacy (South)

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ththis should be under spanish

i believe the answer is a

i am not 100   percent sure but i do know that hitler was burned to death with gas so that makes me think it is d. because they were under his control if they fail or not do as told they will be killed but i could be wrong hope this