The best answer is, to the rise of totalitarian regimes in some countries.
A surge of totalitarianism could be expected in some European states following the political, social, and economic chaos of World War I and the Great Depression. Totalitarian regimes flourished in countries where fascism and communism were popular, including Germany, Italy, and the Russian Empire. Many leaders used the state's total control of economy and society associated with totalitarianism to address issues of their time which included job shortages, insufficient industry, or even foodstuffs depending on the region.
Well, Roosevelt had stopped all oil supplies that would be traded with Japan to stop, therefore Japan would have its main oil source destroyed. They needed oil so they would attack Pearl Harbor who was unaware of any attack. Also it was an Island and only had a few defences.
The answer would be 10 year but it anit up there so the real answer is 9 years hoped i helped
Answer:2. It led to the temporary closure of 500 colleges
Explanation:--more than 500 American colleges & universities were closed by mid-May;