What led to the Vietnam war?

I live in Vietnam . The cause of Vietnam war is USSR and USA .

The war in Viet Nam has been raging for over 200 years,but was mainly just infighting between regions and the French have been running them for most of that time. When the red Chinese started forcing there way in and trying to turn the country into full communists,the french asked the United States to help,it started as an advisory action to teach the south Viet Namese army tactics,but ended up as full scale war,although it was not declared as such for many years after it was over.