how did the country mentioned get the name?
The name for Japan in Japanese is written using the kanji and pronounced "Nippon" or "Nihon".
Japan
The name for Japan in Japanese is written using the kanji and pronounced "Nippon" or "Nihon". 
what is the name of the very strong winds that can affect japan Kamikaze what does the term refer to? The were two winds or storms that are said to have saved Japan from two Mongol fleets under Kublai Khan.
wiki:7760027
Japan [SEP] Etymology
The name for Japan in Japanese is written using the kanji and pronounced "Nippon" or "Nihon". Before it was adopted in the early 8th century, the country was known in China as "Wa" () and in Japan by the endonym "Yamato". "Nippon", the original Sino-Japanese reading of the characters, is favored today for official uses, including on banknotes and postage stamps. "Nihon" is typically used in everyday speech and reflects shifts in Japanese phonology during the Edo period. The characters mean "sun origin", in reference to Japan's relatively eastern location. It is the source of the popular Western epithet "Land of the Rising Sun".