Colonists were forbidden to settle west of the apex (highest peak) of the Appalachian mountains.
In the classic sense, American imperialism is a myth. The US never had a policy either stated or understood of importing cheap raw material and requiring vassal states or colonies to accept expensive manufactured goods, as did for England. The dominance of American culture and products in the mid 20th century was mostly the result of people in other nation craving the standard of living enjoyed in the world's largest democracy.
During the Taiping Rebellion, the peasants rebelled. It was mostly a civil war which killed scores of people (twenty million people approximately). The movement was a millenarian movement (meaning it occurred because of religious ideology). The movement was led by Hong Xiuquan who claimed he was Jesus' younger brother.
Conflict in the Middle East disrupted energy markets, causing high oil and gas prices in the United States. D. Conflict in the Middle East disrupted oil exports from the region, leading to a boom in U.S. oil production
