The correct answer is option D: The power of Gulf of Tokin Resolution gives President Johnson the power to escalate US involvement with troops and planes.
The Gulf of Tokin Resolution was passed on August 7, 1964 by the U.S Congress after reports of two attacks North Vietnamese boats on U.S naval destroyer in the Gulf of Tokin. This resolution authorized President Lyndon Johnson to all necessary measures to curb armed attacks against U.S forces and also to prevent any kind of aggression caused by the communist government of the North Vietnam. The Gulf of Tonkin Resolution served as the official catalyst for the United States' extensive involvement in the Vietnam War.
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