LamarkNewAge writes:
The French got involved in Vietnam in the early 1900s in the hope that it would be a productive colony in a way that China was to Britain.
As I recall from the Burns documentary, roughly the mid 1800s.
Then France split Vietnam up...
From Wikipedia, the French split Vietnam up into three regions as they conquered it, but it was recombined into a single country again under the name French Indochina in 1887.
...and then the "Communist" movement had much more to do with getting on with unifying the entire nation of Vietnam plus getting the French out.
As I recall from the Burns documentary, and Wikipedia confirms, efforts to expel the French began well before the communists took over in the north, the first in the late 1800s.
--Percy