From the mid- to late 19th century, Guatemala suffered chronic instability and civil strife. Beginning in the early 20th century, it was ruled by a series of dictators backed by the United Fruit Company and the United States government. In 1944, the authoritarian leader Jorge Ubico was overthrown by a pro-democratic military coup, initiating a decade-long revolution that led to sweeping social and economic reforms. A U.S.-backed military coup in 1954 ended the revolution and installed a dictatorship.