YOU SAID:

i am a one year old child that has been to every country in the world.

INTO JAPANESE

私は世界のあらゆる国に行った1歳の子供です。

BACK INTO ENGLISH

I am a one-year-old kid who has been to every country in the world.

INTO JAPANESE

私は世界中の国に行った1歳の子供です。

BACK INTO ENGLISH

I am a one-year-old kid who has been to countries all over the world.

INTO JAPANESE

私は世界中の国々に行ったことのある1歳の子供です。

BACK INTO ENGLISH

I am a one-year-old kid who has been to countries all over the world.