Respuesta :
Answer:
B
Explanation:
John F. Kennedy became president of the United States in 1961. At this time, the U.S. was not officially involved in the Vietnam War, though some U.S. troops were stationed there. In 1961, President Kennedy agreed to increase the number of U.S. troops in the area. U.S. aid would again increase after the next president, Lyndon B. Johnson, took office in 1963.