The Panama Canal (Spanish: Canal de Panamá) is a 77.1-kilometre (48 mi) ship canal in Panama that connects the Atlantic Ocean (via the Caribbean Sea) to the Pacific Ocean. The canal cuts across the Isthmus of Panama and is a key conduit for international maritime trade. There are locks at each end to lift ships up to Gatun Lake, an artificial lake created to reduce the amount of excavation work required for the canal, 26 metres (85 ft) above sea level. The current locks are 33.5 metres (110 ft) wide. A third, wider lane of locks is currently under construction and is due to open in 2015.
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On December 31, 1999, at noon, the United State returned management and control of the Panama Canal and the Canal Zone to Panama. This ends a remarkable period of 85 years in which the United States' control over the waterway served as a powerful reminder of the strength of the U.S. in the Western Hemisphere. The handover has not been without controversy.
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n the 99 years since its opening, the canal continues to enjoy great success. Even though world shipping—and the size of ships themselves—has changed markedly since the canal was designed, it continues to be a vital link in world trade, carrying more cargo than ever before, with fewer overhead costs.[citation needed] Nevertheless, the canal faces a number of potential concerns.