How did president Kennedy help south Vietnam?

President John F. Kennedy significantly increased U.S. support for South Vietnam during his administration, primarily in response to the growing threat of communism in the region. He expanded military aid, sent additional military advisors, and authorized covert operations to combat the Viet Cong insurgency. Kennedy believed that a strong South Vietnam was essential for preventing the spread of communism in Southeast Asia, leading to a more substantial American commitment in the early 1960s.