Most likely, Chinese explorers and merchants brought it over from their homeland. Because, if you study the two languages closely, as I have, you wil notice that some of the characters and kanji (which are the pictorial forms of Japanese, not the phonetic) are similar, if not the same. Although many of the pronunciations did not get passed on, the writing did. I'm not sure what they had before then. You'd have to search that on your own.
The language in which the document was first written is not specified in the question.
Japanese- always, as that is where the dog was first recognized as a breed. Please see the discussion page.
Japanese would be the hardest language to learn as a second language for someone whose first language was English. And vise versa. If Japanese if your first language then English is the hardest language to learn. Or actually it might be the easiest but only if your first language was Japanese. The hardest might be French if your first language was Japanese.
Japanese is written in five scripts: kanji, hiragana, katakana, romanji, and furigana. Each script serves a different purpose in the written language.
Kigo in Japanese is pronounced as "kee-goh" with the stress on the first syllable.
The japanese first borrowed from the Chinese. Then they simplified the chinese characters into the 50 'kanas'
M. Shibata has written: 'An English and Japanese dictionary' -- subject(s): Dictionaries, English, English language, Japanese, Japanese language
The language in which the document was first written is not specified in the question.
Janet S. Shibamoto Smith has written: 'Japanese women's language' -- subject(s): Japanese language, Language, Syntax, Women
Takanaka Chiri has written: 'Ainugo eiri jiten' -- subject(s): Ainu language, Dictionaries, Japanese language, Japanese
"Kankokugo" is Korean (language) in Japanese. It is written as: 韓国語
Ichiro Shirato has written: 'Living language conversational Japanese' -- subject(s): Japanese language, Conversation and phrase books, English
Noah S. Brannen has written: 'The practical Japanese-English dictionary' -- subject(s): Japanese language, Dictionaries, English 'The practical English-Japanese dictionary' -- subject(s): Japanese language, English, Textbooks for foreign speakers, Dictionaries, Japanese, English language
Takeshi Naruse has written: 'Kotoba no jikai' -- subject(s): Comparative Grammar, English, English language, Grammar, Comparative, Japanese, Japanese National characteristics, Japanese language, National characteristics, Japanese
Shizue Osa has written: 'Kindai Nihon to kokugo nashonarizumu' -- subject(s): Japanese language, Language and culture, Language policy, Nationalism, Political aspects, Political aspects of Japanese language
W. G. Aston has written: 'A grammar of the Japanese spoken language' -- subject(s): Japanese language, Grammar 'A Grammar of the Japanese written language' -- subject(s): Japanese language, Grammar 'Shinto, the ancient religion of Japan' -- subject(s): Shinto 'Shinto (the way of the gods)' -- subject(s): Shinto, Ancestor worship
Barbara Pizziconi has written: 'Japanese modality' -- subject(s): Japanese language, Modality