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)
Under the provisions of Article XII, the United States and Panama agreed to study jointly the feasibility of a sea-level canal and, if deemed necessary, to negotiate terms for its construction. Payments to Panama from the commission ("a just and equitable return on the national resources which it has dedicated to the . . . canal") were set forth in Article XIII. These included a fixed annuity of US$10 million, an annual contingency payment of up to US$10 million to be paid out of any commission profits, and US$0.30 per Panama Canal net ton of cargo that passed through the canal, paid out of canal tolls. The latter figure was to be periodically adjusted for inflation and was expected to net Panama between US$40 and US$70 million annually during the life of the treaty. In addition, Article III stipulated that Panama would receive a further US$10 million annually for services (police, fire protection, street cleaning, traffic management, and garbage collection) it would provide in the canal operating areas.