The effects of the Great Depression and economic collapse led to the acceptance of fascism. Fascism seeks to solve economic challenges by placing the authority in a single person which leads to dictatorship. The main issues that brought forth dictators after World War I were economic--The Great Depression stuck Europe almost as hard as it struck the US, and people were desperate for options and strong leadership. This is the recipe for authoritarianism. thats not ten sentences but it will help
