Is that actually true? I like to think I'm at least somewhat educated in history but I never got the connection between the Star Wars plot and the Vietnam War. I initially thought it was inspired by the French Resistance (probably very wrong).
But I think everyone can also obviously tell that the prequels are inspired by the events of the transformations of the Roman Republic and Weimar Germany from dysfunctional republics into imperialist regimes.
The plot of the sequels on the other hand seemed more like they were inspired by advertising campaigns than history