USS Maine - U.S. vessel was exploded killing many U.S. citizens. The U.S. thought it was an attack from Spain but was later proven that it was an accident from inside the ship. This started the Spanish-American war.
Yellow Journalism - Prints out talked about sensationalized stories to sell more newspaper. Following the USS Maine, journalist took it upon themselves to use this occurrence frequently in their stories.
Hawaii Annexation - U.S. businessmen are trying to control trade and resources in Hawaii. Queen Liliuokalani is trying to make Hawaii for Hawaiians. Queen Liliuokalani was later removed from thrown by force.
Panama Canal - Shortened the length from east to west , reduced cost of merchant shipping as well as elimated heavy expenses of maintaing two separate navies
Causes of Imperialism - World power , Nationalism , spread of religion and culture
Open door policy - United States plan providing each nation with equal opportunity to trade within china.