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Why did the United States enter World War II?

美國為什麼加入第二次世界大戰？

官方列出的全部答案（4 個）All official answers (4)

(Bombing of) Pearl Harbor
Japanese attacked Pearl Harbor
To support the Allied Powers (England, France, and Russia)
To oppose the Axis Powers (Germany, Italy, and Japan)

官方題目：移民局 M-1778 (09/25)，第 15 頁Official question: USCIS M-1778 (09/25), page 15 移民局官方題目 PDFUSCIS official PDF