USA HISTORY

Detailed explanation-1: -The second, called The Panama Canal Treaty, stated that the Panama Canal Zone would cease to exist on October 1, 1979, and the Canal itself would be turned over to the Panamanians on December 31, 1999. These two treaties were signed on September 7, 1977.

Detailed explanation-2: -On December 31, 1999, the United States, in accordance with the Torrijos-Carter Treaties, officially hands over control of the Panama Canal, putting the strategic waterway into Panamanian hands for the first time.

Detailed explanation-3: -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, the canal was taken over by the Panamanian government in 1999.

Detailed explanation-4: -The United States invasion of Panama, codenamed Operation Just Cause, lasted over a month between mid-December 1989 and late January 1990, ten years after the Torrijos–Carter Treaties were ratified to transfer control of the Panama Canal from the United States to Panama by January 1, 2000.