Which of the following was the main legacy of World War I on the western society?? A. The enlightenment belief that reason would prevail
B. Two decades of economic gains
C a sense of disillusionment with pre-war institutions
D. A lasting peace

A) The enlightenment belief that reason would prevail

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- a government ruled by the people, or assembly. officials monarchy - a single ruler like a king. over time some city-states, like athens would change governments. what this means is that all the citizens voted on all the laws.