Morishige became commanders of Date Masamune, fought many battles for the Date's dominance over Tohoku region. The two held only nominal independence from Date, solely to placate the retainers of the families. When Masamune surrendered to the new shogun Toyotomi Hideyoshi in 1590, Rusu was abandoned and Kokubun was formally regarded a subject of Date. Miyagi District became a part of the territory of Date clan. In 1600, just after the Battle of Sekigahara, Masamune decided to build and move to the Sendai Castle in Miyagi District. After that the district was developed as the suburb of new Sendai town. Sendai town has been ruled as a different area from the rest since then. The Meiji government divided Mutsu Province into three parts in 1869. Miyagi District became part of Rikuzen Province. The population in 1889 (excluding Sendai) was 60,518. In March 2011, exactly ten years ago, an earthquake and tsunami hit this region of Japan. Towns and villages Matsushima Rifu Shichigahama References Bibliography Committee for Editing the Miyagi Prefecture History (under Miyagi Prefecture), Miyagi Prefecture History, vol.2, Gyōsei, reprinted in 1987. (original version was published in 1956). 宮城県史編纂委員会『宮城県史』（2、近世史）、ぎょうせい。 Districts in Miyagi Prefecture