What is American Imperialism and why did it happen ?

“American imperialism” is a term that refers to the economic, military, and cultural influence of the United States on other countries. First popularized during the presidency of James K. ... During this time, industrialization caused American businessmen to seek new international markets in which to sell their goods.

the tariff was created to protect industry in the northern part of the united states. industries in the north were being driven out of business by imported goods that were priced at a low rate. the goal was to protect these industries   by taxing the goods.

it was on the rise and doing very well and would continue to do well until the great depression from 1929-1939