Ōra (邑楽町, Ōra-machi) is a town located in Ōra District, Gunma Prefecture, in the northern Kantō region of Japan. As of February 2015, the town had an estimated population of 26,380 and a population density of 848 persons per km². Its total area was 31.11 km².
Ōra is located in the extreme southern corner Gunma prefecture, bordered by Tochigi Prefecture to the north.
The villages of Nakano, Takashima and Nagae were created within Ōra District, Gunma Prefecture on April 1, 1889 with the creation of the municipalities system after the Meiji Restoration. On March 1, 1955, Nakano and Takashima merged to form the village of Nakajima. Nakae merged with neighboring Tominaga and Eiraku to form the village of Chiyoda. However, on September 30, 1956 the former Nakae village was transferred from Chiyoda to Nakajima, and Nakajma was renamed Ōra on January 1, 1957. Ōra was elevated to town status on April 1, 1968.
Gunma Prefecture (群馬県, Gunma-ken) is a prefecture of Japan located in the northwest corner of the Kantō region on the main Honshu island. Its capital is Maebashi.
Japan was without horses until around the fifth century CE. The ancient province of Gunma was a center of the horsebreeding and trading activities for the newly immigrated continental peoples. The arrival of horses and the remains of horse-tackle coincides with the arrival of a large migration from the mainland. From this point forward, the horse became a vital part of Japanese military maneuvers, quickly displacing the older Yayoi tradition of fighting on foot.
When Mount Haruna erupted in the late 6th century, Japan was still in the pre-historical phase (prior to the importation of the Chinese writing system during the Nara period). The Gunma Prefectural archaeology unit in 1994 was able to date the eruption through zoological anthropology at the corral sites that were buried in ash.
In the past, Gunma was joined with Tochigi Prefecture and called Kenu Province. This was later divided into Kami-tsu-ke (Upper Kenu, Gunma) and Shimo-tsu-ke (Lower Kenu, Tochigi). The area is sometimes referred to as Jomo (上毛, Jōmō). For most of Japanese history, Gunma was known as the province of Kozuke.
Gunma is the name of several places in Japan:
In Gunma prefecture: