YOU SAID:

Where did the period come from??

INTO JAPANESE

その時代はどこから来たのか??

BACK INTO ENGLISH

Where did that era come from??

INTO JAPANESE

それはどこから来たのですか？

BACK INTO ENGLISH

Where did that come from?

INTO JAPANESE

それはどこから来たのですか？

BACK INTO ENGLISH

Where did that come from?