YOU SAID:

The reason is America was in great depression and world war was going on.

INTO JAPANESE

その理由は、アメリカが大恐慌に陥り、世界大戦が続いていたからです。

BACK INTO ENGLISH

The reason is that the United States fell into the Great Depression and the World War continued.

INTO JAPANESE

その理由は、米国が大恐慌に陥り、世界大戦が続いたためです。

BACK INTO ENGLISH

The reason is that the United States fell into the Great Depression and the World War continued.