What were some of the different cases for imperialism?​

the United States exerted political, social, and economic control over countries such as the Philippines, Cuba, Japan, Korea.

I hope this helps!!

British established protectorates over Niger River Delta, British protectorates such as Nigeria, India and Burma, and US protectorates on Pacific Islands. the United States exerted political, social, and economic control over countries such as the Philippines, Cuba, Japan, Korea.

Explanation:

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.