The United Fruit Company was an American multinational corporation that traded in tropical fruit grown on Latin American plantations and sold in the United States and Europe. The company was formed in 1899 from the merger of the Boston Fruit Company with Minor C. Keith's banana-trading enterprises. It flourished in the early and mid-20th century, and it came to control vast territories and transportation networks in Central America, the Caribbean coast of Colombia, and the West Indies. Although it competed with the Standard Fruit Company for dominance in the international banana trade, it maintained a virtual monopoly in certain regions, some of which came to be called banana republics – such as Costa Rica, Honduras, and Guatemala.

Minor Cooper Keith was an American businessman whose railroad, commercial agriculture, and cargo liner enterprises had a major impact on the national economies of the Central American countries, as well as on the Caribbean region of Colombia. Keith's work on the Costa Rican railroad to the Caribbean, a project begun by his uncle Henry Meiggs, led him to become involved in the large-scale export of bananas to the United States. In 1899, Keith's banana-trading concerns were absorbed into the powerful United Fruit Company, of which he became vice-president. Keith was also involved in a number of other business ventures, including gold mining in Costa Rica and real estate development in the US.