The ideas of about civil liberties and government did not happen over night but over the course of several centuries, officially starting when king John signed and which was the first document to limit the authority of the ruler. Many more documents for the succeeding centuries gave birth to the parliamentary monarchy including The Petition of Right, the Habeas Corpus Act of 1679, the Bill of Rights from 1689 among many others. <span />
The people and there desperation for Germany to be financially well and not in ruins like it is. People in Germany didn't feel proud to be German anymore. Then a guy walks in saying he can fix all there problems and they just need to trust him and they did.