Circuit (administrative division)
The inspection circuits of the Tang dynasty in 742
|Literal meaning||way, path, circuit|
A circuit (Chinese: 道; pinyin: dào) was a historical political division of China and is a historical and modern administrative unit in Japan. The primary level of administrative division of Korea under the Joseon and in modern North and South Korea employs the same Chinese character as the Chinese and Japanese divisions but, because of its relatively greater importance, is usually translated as province instead.
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Circuits originated in China during the Han dynasty, and were used as a lower tier administrative division, comparable to the county (simplified Chinese: 县; traditional Chinese: 縣; pinyin: xiàn, also translated as "districts"), but only to be used in areas in the fringes of the Empire, that were either primarily inhabited by non-Han Chinese peoples, or too geographically isolated from the rest of the Han centers of power. The system fell into disuse after the collapse of the Western Jin dynasty.
The administrative division was revived in 627 when Tang Emperor Taizong made it the highest level administrative division, and subdivided China into ten circuits. These were originally meant to be purely geographic and not administrative. Emperor Xuanzong added a further five and slowly, the circuits strengthened their own power, until they became powerful regional forces that tore the country apart during the Five Dynasties and Ten Kingdoms period. During the Later Jin and Song dynasties, circuits were renamed from dao to lu (路), both of which literally mean "road" or "path". Dao were revived during the Yuan dynasty.
Circuits were demoted to the second-level after the Yuan dynasty established provinces at the very top, and remained there for the next several centuries. Under the Qing, they were overseen by a circuit intendant or tao-tai (Chinese: 道臺; pinyin: dàotái). The circuit intendant of Shanghai was particularly influential.
During the Republic of China era, circuits still existed as high-level, though not top-level, administrative divisions such as Qiongya Circuit (now Hainan province). In 1928, all circuits were replaced with committees or simply abandoned.
During the Asuka period (AD 538–710), Japan was organized into five provinces and seven circuits, known as the Gokishichidō (5 ki 7 dō), as part of a legal and governmental system borrowed from the Chinese. Though these units did not survive as administrative structures beyond the Muromachi period (1336–1573), they did remain important geographical entities up until the 19th century. The seven circuits spread over the islands of Honshū, Shikoku, and Kyūshū:
- Tōkaidō (東海道) "East Sea Circuit": 15 provinces (kuni)
- Nankaidō (南海道) "South Sea Circuit": 6 provinces
- Saikaidō (西海道) "West Sea Circuit": 8 provinces
- Hokurikudō (北陸道) "North Land Circuit": 7 provinces
- San'indō (山陰道) "Shaded-side Circuit": 8 provinces
- San'yōdō (山陽道) "Sunny-side Circuit": 8 provinces
- Tōsandō (東山道) "East Mountain Circuit": 13 provinces
Since the late 10th century, the do (“province”) has been the primary administrative division in Korea. See Eight Provinces, Provinces of Korea, Subdivisions of South Korea and Administrative divisions of North Korea for details.