Do you want me to bring up examples of nation building pre WW2 in Central America/Haiti, areas that did not have a democratic foundations where once US Marines departed they reverted to strongman dictatoriships? Phillipines post WW2?
The Phillipines is a perfect example of how democracy to work it must be a grass roots effort. It barley works now but they did it all by themselves so the will to make it works continues (and they did it without any American help).
On the contrary, your assertions prove your ignorance, unless "flourished" means "taking some tentative steps" on your planet.
A culture where leader worship causes men to smash themselves suicidally upside warships isn't what I would call ripe for democracy.