Panama Canal
Colombia, France, and later the United States controlled the territory surrounding the canal during construction. The US continued to control the canal and surrounding Panama Canal Zone until the 1977 Torrijos–Carter Treaties provided for handover to Panama. After a period of joint American–Panamanian control, in 1999, the canal was taken over by the Panamanian government. It is now managed and operated by the government-owned Panama Canal Authority.
Western Caribbean Zone
Several attempts to build a Panama Canal from the Atlantic to the Pacific side of Central America failed before US interests acquired the French project and lands in 1902. In constructing the canal, the US builders employed thousands of workers from the British Caribbean, especially Jamaica and Barbados. As a result of this immigration, an English-speaking community grew up in the Canal Zone and adjacent areas. It continues to this day.