Indochina is made up of Laos, Cambodia and Vietnam.  It was colonized by the French in the
            
  late 1800's and given up in 1939.  Japan tookover France's loss after that.  After Japan's
            
  defeat in 1945, Vietnam's patriot and communist, Ho Chi Minh and his Viet Minh declared
            
  Vietnam independent.  After that, France came to claim their loss.  The US supported France
            
  fearing the "Domino Theory" would take affect after in 1949 China fell to communism.  In
            
  1950, the US sent troops to South Korea to prevent the dominos from falling.  The
            
  Vietnamese took fort Dien Bien Phoo in May of 1954, so then the French finally pulled out. 
            
  That set up 2 nations North Vietnam and South Vietnam split at the 17th parallel.  
            
 Ho Chi Minh was in the North and was a Communist  
            
 Ngo Dinh Diem was in South and disliked communism.
            
  He argued that if there was an election to choose a leader of 1 unified nation, that Ho
            
  In 1956, Diem closed all elections, and appointed local officials.  That gave him less of
            
  support.  Also he didn't win the support of the peasants, that was a major mistake... in
            
  the south Vietminh members who were located in South Vietnam formed their own communist
            
  party.  Diem called them the Viet Cong meaning Vietnamese Communists.  North Vietnam
            
  supported the rebellion in the early parts.  In 1959 the Vietminh set up a supply route to
            
  South Vietnam through Laos and Cambodia.  They were then named the Ho Chi Minh trail.  Also
            
  in 1959, the  first American advisors were killed during a battle. By 1960 the Vietcong had
            
  about 10,000 troops and were threatening to overthrow Diem.  Then the US sent
            
  15,100(WorldBook) more US advisors in from 1961 - 1963. The Buddhist's also had a hard time
            
  with Diem, they felt he did not give enough religious freedom.  The Buddhists also held the
            
  better part of Vietnam's popul
            
...