The United Fruit Company was an American corporation that traded in tropical fruit (primarily bananas), grown on Central and South American plantations, and sold in the United States and Europe. The company was formed in 1899, from the merger of Minor C. Keith's banana-trading concerns with Andrew W. Preston's Boston Fruit Company. 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, Ecuador, and the West Indies. Though it competed with the Standard Fruit Company (later Dole Food 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.
United Fruit had a deep and long-lasting impact on the economic and political development of several Latin American countries. Critics often accused it of exploitative neocolonialism, and described it as the archetypal example of the influence of a multinational corporation on the internal politics of the banana republics. After a period of financial decline, United Fruit was merged with Eli M. Black's AMK in 1970, to become the United Brands Company. In 1984, Carl Lindner, Jr. transformed United Brands into the present-day Chiquita Brands International.
In 1871, U.S. railroad entrepreneur Henry Meiggs signed a contract with the government of Costa Rica to build a railroad connecting the capital city of San José to the port of Limón in the Caribbean. Meiggs was assisted in the project by his young nephew Minor C. Keith, who took over Meiggs's business concerns in Costa Rica after his death in 1877. Keith began experimenting with the planting of bananas as a cheap source of food for his workers.