United States territorial acquisitions
The Panama Canal Zone was an unorganized US territory located within the Republic of Panama. It was established under the Hay–Bunau-Varilla Treaty in 1903 and disestablished in 1979 under the Torrijos–Carter Treaties. Panama gained full control over the Panama Canal in 1999.
Gulf of Panama
The Gulf of Panama () is a gulf in the Pacific Ocean, near the southern coast of Panama. It has a maximum width of , a maximum depth of and the size of . The Panama Canal connects the Gulf of Panama with the Caribbean Sea and the Pacific Ocean. The Panamanian capital Panama City is the main urban centre on the gulf shore.