WILL GIVE BRAINLIEST!!!!! President Johnson was passionate about escalating U.S. involvement in Vietnam and therefore a. stopping communism in Vietnam took priority over domestic reforms. b. supporting the domino theory fulfilled America's pledge to support France and Japan during international conflicts. C. supporting the Vietminh would help stop the spread of Japanese imperialism. d. fighting the Khmer Rouge was more important than funding black Americans' fight for civil rights.​