How did the nazis and Khmer Rouge each rose to power

The nazis (or Hitler really) rose to power because he promised to "make Germany great again" a. k. a saying there will be more jobs and more money.

I'm not too sure about Khmer Rouge sorry. If you have anymore holocaust questions feel free to ask.

Well i know how the Nazi group rose in power. the Nazi group was led by Hitler and he promised a lot of things for Germany, such as many jobs, a good financial society for Germany and promised to make Germany great again, as well as this Germany were only too keen to rely on Hitler because they didn't want Germany to become a communist countrey