On September 26, 2011, the town of
Fujisawa was merged with the expanded city of
Ichinoseki. Higashiiwai District was dissolved as a result of this merger.
post-WWII timeline
January 1, 1955 - The village of Maikawa was merged with the villages of Ganmi, Hagisho and Yasaka (from
Nishiiwai District), and the old city of
Ichinoseki (1st) to create the new and expanded city of
Ichinoseki (2nd).
February 1, 1955 - The villages of Tagawatsu and Nagasaka were merged to create the town of Higashiyama.
April 1, 1955
The town of Fujisawa, the villages of Yasawa, Oumi and parts of Otsuho (the localities of Otaki and Horowa) were merged to create the town of Fujisawa.
The villages of Orikabe, Yakoshi and the remaining parts of Otsuho were merged to create the village of
Murone.
The village of Namabo was merged with the town of Maesawa, and the villages of Hakusan and Furushiro (from
Isawa District) to create the town of
Maesawa (in
Isawa District).
The towns of Yokusawa and Ohara, and the villages of Sazawa, Shibutami and Kyoda were merged to create the town of
Daitō.
September 26, 2011 - The town of
Fujisawa was merged into the expanded city of
Ichinoseki.[1] Higashiiwai District was dissolved as a result of this merger.