The Official Language of Japan

Japanese language is commonly used in Japan.

However, the official languages of Japan is not defined explicitly under Japanese laws.

Of course, we learn Japanese language in school education, and official documents in Japan are written in Japanese, so it's practically a official language.

On the other hand, Angaur States of Republic of Palau defined Palauan, English, and Japanese language as its official languages.

The reason why that contains Japanese language is that Palau was a mandated territory of Japan.

Although only this region in the world defined Japanese language as the official language, there seems to be no people who can speak Japanese.

日本の公用語

日本では、日本語が一般的に用いられています。

しかし、実は日本の法律では、公用語については明示されていません。

もちろん、学校教育では「国語」で日本語を学び、公文書も日本語で書かれるため、事実上の公用語ではあります。

一方、パラオ共和国のアンガウル州は、公用語としてパラオ語、英語、そして日本語を定めています。

日本語が含まれている理由は、パラオは日本の委任統治領であったことに由来します。

この地域は世界で唯一日本語を公用語としていますが、現在島民の中で日本語を話せる人は一人もないようです。

• Japanese language is commonly used in Japan.
• The Japanese language is commonly used in Japan.

• However, the official languages of Japan is not defined explicitly under Japanese laws.
• However, the official language of Japan is not defined explicitly under Japanese laws.

• Of course, we learn Japanese language in school education, and official documents in Japan are written in Japanese, so it's practically a official language.
• Of course, we learn Japanese language in our school education, and official documents in Japan are written in Japanese, so it's practically an official language.

• On the other hand, Angaur States of Republic of Palau defined Palauan, English, and Japanese language as its official languages.
• On the other hand, Angaur States of Republic of Palau defined Palauan, English, and Japanese languages as its official languages.

• The reason why that contains Japanese language is that Palau was a mandated territory of Japan.
• The reason why it uses the Japanese language is that Palau was a mandated territory of Japan.

• Although only this region in the world defined Japanese language as the official language, there seems to be no people who can speak Japanese.
• Although only this region in the world has defined Japanese language as the official language, there seems to be no people who can speak Japanese.

• The Official Language of Japan
• This sentence is perfect! No correction needed!

• Japanese language is commonly used in Japan.
• Japanese is the language is commonly used in Japan.

• However, the official languages of Japan is not defined explicitly under Japanese laws.
• However, the official language of Japan is not defined explicitly under Japanese laws.

• Of course, we learn Japanese language in school education, and official documents in Japan are written in Japanese, so it's practically a official language.
• Of course, we learn Japanese language in school education, and official documents in Japan are written in Japanese, so it's practically an official language.

• On the other hand, Angaur States of Republic of Palau defined Palauan, English, and Japanese language as its official languages.
• On the other hand, Angaur States of Republic of Palau defined Palauan, English, and Japanese language as its official languages.

• The reason why that contains Japanese language is that Palau was a mandated territory of Japan.
• The reason why that list contains Japanese language is that Palau was a mandated territory of Japan.

• Although only this region in the world defined Japanese language as the official language, there seems to be no people who can speak Japanese.
• Although only this region in the world defined Japanese language as the official language, there seems to be no people who can speak Japanese.

I see why you keep saying "Japanese language" but you don't need it every time - it's implied that you are talking about the language, rather than the culture. Just "Japanese" is fine in this case. :)

• The Official Language of Japan
• This sentence is perfect! No correction needed!

• However, the official languages of Japan is not defined explicitly under Japanese laws.
• However, the official languages of Japan areis not defined explicitly under Japanese laws.

  Or
  
  The official language of Japan is not

• Of course, we learn Japanese language in school education, and official documents in Japan are written in Japanese, so it's practically a official language.
• Of course, we learn Japanese language in school education, and official documents in Japan are written in Japanese, so it's prde facticallyo an official language.

  Read about de jure and de facto
  
  Nice legal expressions to know.
  
  They are Latin but used in many languages.

• On the other hand, Angaur States of Republic of Palau defined Palauan, English, and Japanese language as its official languages.
• On the other hand, Angaur States of Republic of Palau defined Palauan, English, and Japanese language as its official languages.

• The reason why that contains Japanese language is that Palau was a mandated territory of Japan.
• The reason why that list contains the Japanese language is that Palau was a mandated territory of Japan.

• Although only this region in the world defined Japanese language as the official language, there seems to be no people who can speak Japanese.
• Although only this region in the world defined Japanese language as the official language, there seems to be no people there who can speak Japanese.

Nice piece of trivia. Thank you.

Kind of like the USA, English is not the official language. At least to my knowledge.