Depends what era you mean right now we're sort of at peace with them but we used to be in a war against them so it all depends on time.
The outbreak of World War II spurred the mobilization of America military industrial might
Answer:
As the North industrialized rapidly between 1820 and 1860, railroads helped create --and prospered from -- the rise of factory production and diversified large-scale agriculture. In the South, railroads played a marginal role in the cotton and tobacco economy.
