Before the United States captured Puerto Rico from Spain in 1898, the colony was agriculture based. Most worked on sugar cane, tobacco, or coffee plantations. Through the beginning of the 20th century, Puerto Ricans remained agricultural. Operation Bootstrap, an operation of the United States and the Puerto Rico Economic Development Administration, began in 1942 and was put in place to transform Puerto Rico into an industrial colony. Government owned factories were built to shift development to industrial factory work and, eventually, education of the factory work force. The growth of Puerto Rican industry changed the outlook on familial social structure.