President Johnson escalated the Vietnam War in response to the
(A) My Lai Massacre
(B) Second Gulf of Tonkin incident
(C) establishment of the Viet Cong
(D) release of the Pentagon Papers
(E) French withdrawal from the region
President Johnson escalated the Vietnam War in response to the "(B) Second Gulf of Tonkin incident," since this proved that a "lackluster" United States presence was not working, and that more force needed to be used.
