YOU SAID:

Japan uses Japanese and the Japanese who live there speak Japanese because they are Japanese and Japan uses the Japanese language

INTO JAPANESE

日本は日本語を使い、そこに住む日本人は日本語であり、日本は日本語を使うので日本語を話します

BACK INTO ENGLISH

Japan uses Japanese, the Japanese living there are Japanese, and Japan uses Japanese, so I speak Japanese.

INTO JAPANESE

日本は日本語を使い、そこに住む日本人は日本人で、日本は日本語を使うので、私は日本語を話します。

BACK INTO ENGLISH

I speak Japanese because Japan uses Japanese, the Japanese who live there are Japanese, and Japan uses Japanese.

INTO JAPANESE

日本は日本語を使い、そこに住む日本人は日本語を使い、日本は日本語を使うので、私は日本語を話します。

BACK INTO ENGLISH

I speak Japanese because Japan uses Japanese, the Japanese who live there use Japanese, and Japan uses Japanese.

INTO JAPANESE

日本は日本語を使い、そこに住む日本人は日本語を使い、日本は日本語を使うので、私は日本語を話します。

BACK INTO ENGLISH

I speak Japanese because Japan uses Japanese, the Japanese who live there use Japanese, and Japan uses Japanese.