Who named "Japan"?

/uploadfile/959/619/yqkyAGwcEw.jpg The picture makes it very clear.

Haha, just kidding. Please see the correct explanation below:

The origin of Japan’s name

Japan’s full name is “Japan” and it is an island country located in the northeastern part of Asia and the northwest corner of the Pacific Ocean. In ancient times, it was called "Eight Continents Country", "Weiyuan China", "Fengweiyuan Ruisui Country", etc. By the time of Emperor Jimmu in 42 BC, the place where he founded the country was called Yamato, which means "和" or "大和". In Japanese, Yama means "mountain" and to means "place". Together they originally meant " "Mountainous Land" is the name of the country named after its terrain. In this way, the name "Yamato" became the name of Japan. At the end of the 3rd century and the beginning of the 4th century, in the Yamato region near the national capital, there was another Xiewu Kingdom that ruled the entire Kitakyushu and reached the Kanto region, also known as the "Yamato" regime. Therefore, Japan was commonly known as "Yamato" at that time. In 645, the first year of Daika, Japan's thirty-sixth Emperor Kotoku came to the throne. After the Dahua Reform, Japan followed the Tang system and established a feudal centralized state. In order to distinguish it from the previous Yamato regime, the country was officially named Japan. country. In Japanese official documents, the name was changed to Japan in 720. In this year, Japan was compiled into the "Nihon Shoki" in Chinese, and the ancient Japanese names of "Yamato" were changed to "Japan". For about half a century before the end of World War II, Japan was an imperialist country with a military feudal character. In 1868, during the Meiji Restoration, Japan's national expansionism gradually rose. The Meiji Constitution promulgated in 1889 designated the country as the "Empire of Japan". In World War II, the "Empire of Japan" was defeated and surrendered. The Constitution promulgated in November 1946 called Japan the "State of Japan", which has been used until now.