Musashi Province
Musashi ( Japanese 武 蔵 国 , Musashi no kuni ) or Bushū ( 武 州 ) was one of the historic provinces of Japan . Musashi is now occupied by the prefectures of Tokyo and Saitama , a small corner fell to the prefecture of Kanagawa , mainly the cities of Kawasaki and Yokohama . Musashi bordered the provinces of Kai , Kōzuke , Sagami , Shimousa , Shimotsuke and Shinano .
Musashi was the largest province in the Kantō region . It had its old capital ( kokufu ) in the modern Fuchū (an alternative name for a provincial capital) near Tokyo, the provincial temple ( kokubunji ) was near today 's city of the same name .
In 1590 Tokugawa Ieyasu exchanged the area around Tokyo Bay for his old, more western territories and began to expand the strategically more favorably located Edo with his castle . Edo was then his headquarters prior to the Battle of Sekigahara , and Edo became the ruling city of Japan in the Edo period named after . After the Meiji Restoration , Edo became the seat of the Tennō and was renamed Tokyo .
Musashi has survived in the names Tōbu ( 東 武 , "East Musashi") and Seibu ( 西武 , "West Musashi"), namely in the names of the two private railway companies Tōbu Tetsudō and Seibu Tetsudō . The name of the Sōbu main line ( 総 武 本 線 ) also indicates that it connects the province of Shimousa or Sōshū ( 総 州 ) with Musashi.
Coordinates: 35 ° 48 ' N , 139 ° 25' E