(1 = no responsibility, 5 = the MOST responsible) Adolf Hitler, dictator of Nazi Germany, directly ordering the death of 9 million people, coming up with radical racial ideals, brainwashing a majority of the German population ?

5: the MOST responsible

Explanation:

Hitler was largely responsible for the rise of Nazism, the genocide of the Jews, and the outbreak of World War II.

This was because after the first world war, the peace treaties established, left Germany in a situation of great economic recession and social humiliation within Europe. Iss created a feeling of revanchism in the German population. Hitler used this sentiment to create a strong dictatorial team, which in addition to brainwashing the population to support a new war, stimulated radical racist concepts, which included making Germany a racially pure nation that would spread across the world, with the total extermination of Jews , gypsies and other peoples considered by him to be undesirable.

b is the answer i am assuming