Mutsu, in northern Honshū, was one of the last provinces to be formed as land was taken from the indigenous Ainu, and became the largest as it expanded northward.
The Uesugi clan had a castle town at Wakamatsu in the south, the Nambu clan at Morioka in the north, and Date Masamune, a close ally of the Tokugawa, established Sendai, which is now the largest town of the TÅhoku region.
Bizen (ååå½ -no kuni) was a province of Japan on the Inland Sea side of HonshÅ«, in what is today the southeastern part of Okayama Prefecture.
In WadÅ 6, Tambaprovince (丹波å½) was sundered from Tango province (丹å¾å½); and HyÅ«ga province (æ¥åå½) was divided from Osumi province (大éå½).
In the Muromachi period, Bizen was ruled by the Akamatsu clan from Mimasaka, but by the Sengoku period the Urakami clan had become dominant and settled in Okayama city.