Answer: He used persuasion and blame to control everyone.
Explanation: He persuaded people in Germany to trust him and he blamed Jews for the destruction of Germany during WW1.
Move the plot:
Flat characters—minor figures that play a supporting role in the story—are used to move the plot along, providing subtle exposition. Such characters do not undergo substantial change or growth in the course of a story. They are also known as "two-dimensional characters" or "static characters."