[["The Vietnam War was a long, costly and divisive conflict that pitted the communist government of North Vietnam against South Vietnam and its principal ally, the United States. The conflict was intensified by the Cold War between the USA and the Soviet Union. 58,220 american troops died in Vietnam.", 59.0], ["1955 to 1975. The U.S. entered the Vietnam War in an attempt to prevent the spread of communism, ", 1.0]]
tell me about the vietnam war
history,vietnam,korean war,nixon