The people in Europe who were entrepreneurial, freedom-loving and open to change moved to America between the 1600s and the 1950s. It was a sort of evolutionary selection: anyone who was loud, spontaneous, brawny and daring was quite likely to move to America. What remained in Europe were (1) the elite for whom any political system would work and (2) the weak, sickly, passive, slow masses who were not smart or strong enough to either move to America or change the political leadership at home. This process was only intensified by World War I and World War II, when the brave and daring men on all sides were gruesomely killed while the cowards, deserters and the terribly unhealthy lived to reproduce.

So what you have now in Europe is, afraid to say, nations of cattle. They could be lined up next to a ditch and shot in the back of the head one by one (as happened during the Bosnian Genocide), but they would never fight back.