What Happened in Germany in the 19th Century?

What happened in post world war one germany that allowed tt of the rise of the nosy party like blessing? Can we learn from how lenient or how severe the punishment was against e kind of a the ideology of fachism that was growing in the 19 thirties in germany. Right now, i think people ina america, including the political class, are figuring out how to respond to kind of insurrection in the movement surrounding it. Imean part of trump's magical appeal, a part of his mythical appeal, is carismatic appeal.