Well, the answer to this question is D. All of the amAbove
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.
Answer: spheres of influence
In international relations, a sphere of influence is a region over which a state has a level of cultural, economic, military or political control. This control is exclusive and more accommodating to the power outside the border.
China in the late 19th and 20th century was divided into these spheres of influence, as many European powers held control over large territories. These were taken either by military attacks, threats to the Chinese authorities or unequal treaties.
One of the reasons why so many Americans were in favor of going to war with Mexico was because "They believed it was <span>necessary in order to gain more territory," since it was clear that Mexico was not going to sell the land voluntarily. </span>