To answer the question above, they are all important, but in my personal answer is the strong popular support. without the popular support the movement of the president will not be as effective as to having the support of the many. It is also easier to manage if you are being supported by the many.
Answer: b. Totalitarian governments arose in many countries.
Explanation:
Between the first and the second world war, came serious economic hardship around the world especially with the Great Depression.
Some countries responded by putting into power, totalitarian governments that told them that they had the answer.
In Germany the Nazis came to power and in Italy the Fascists did the same. Japan saw it's democracy torpedoed by the military which then took over as a military government.
i'm pretty sure its D, but, if not, then sorry....