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.
History of Panama (1977–present)
At the same ceremony in Washington, representatives of the United States and Panama signed a series of fourteen executive agreements associated with the treaties. These included two Agreements in Implementation of Articles III and IV of the Panama Canal Treaty that detailed provisions concerning operation, management, protection, and defense, outlined in the main treaty. Most importantly, these two agreements defined the areas to be held by the United States until 2000 to operate and defend the canal. These areas were distinguished from military areas to be used jointly by the United States and Panama until that time, military areas to be held initially by the United States but turned over to Panama before 2000, and areas that were turned over to Panama on October 1, 1979.