Abolition of the han system in the context of "Han system"

The Fuhanken Sanchisei (府藩県三治制; "Fu, Han and Ken three-tiered Governance System") was the subnational government structure in early Meiji Japan. It lasted from the Boshin War, the start to the Meiji Restoration, in 1868 until the replacement of all remaining feudal domains (-han) with prefectures (-ken) in 1871. During this period, prefectures, urban prefectures (府, fu) and rural prefectures (県, ken), controlled by the new central government, and daimyō Domains (藩, han), still under their pre-restoration feudal rulers, formed the primary administrative subdivisions of the country. The exact numbers varied continually as adjustments to the feudal territorial divisions, mergers and splits started to take up pace, but very roughly there were about >250 -han and about <50 -fu/-ken in total during this time.

As the political borders changed all the time, ancient ritsuryō provinces, essentially static except for some modernizing adjustments in the North where the giant provinces of Mutsu and Dewa (both Tōsan Circuit) were split up and a new circuit (Hokkai Circuit) with 10 provinces was added on Ezo, remained the primary geographic frame of reference even in Meiji Japan until around the turn of the century – just as they had been throughout the late Middle Ages and early modern period.

Aizu Domain (会津藩, Aizu-han) was a domain of the Tokugawa Shogunate of Japan during the Edo period from 1601 to 1871.

The Aizu Domain was based at Tsuruga Castle in Mutsu Province, the core of the modern city of Aizuwakamatsu, located in the Tōhoku region of the island of Honshu. The Aizu Domain was ruled for most of its existence by the shinpan daimyō of the Aizu-Matsudaira clan, a local cadet branch of the ruling Tokugawa clan, but was briefly ruled by the tozama daimyō of the Gamō and Katō clans. The Aizu Domain was assessed under the Kokudaka system with a peak value of 919,000 koku, but this was reduced to 230,000 koku. The Aizu Domain was dissolved in the abolition of the han system in 1871 by the Meiji government and its territory was absorbed into Fukushima Prefecture, covering much of the traditional region of Aizu.

The Mōri clan (毛利氏, Mōri-shi; Japanese pronunciation: [moꜜː.ɾʲi, moː.ɾʲiꜜ.ɕi]) was a Japanese samurai clan descended from Ōe no Hiromoto. Ōe no Hiromoto was descended from the Fujiwara clan. The family's most illustrious member, Mōri Motonari, greatly expanded the clan's power in Aki Province. During the Edo period his descendants became daimyō of the Chōshū Domain under the Tokugawa shogunate. After the Meiji Restoration with the abolition of the han system and daimyō, the Mōri clan became part of the new nobility.

The Chōshū Domain (長州藩, Chōshū-han), also known as the Hagi Domain (萩藩, Hagi-han), was a domain (han) of the Tokugawa Shogunate of Japan during the Edo period from 1600 to 1871.

The Chōshū Domain was based at Hagi Castle in Nagato Province, in the modern city of Hagi, located in the Chūgoku region of the island of Honshu. The Chōshū Domain was ruled for its existence by the tozama daimyō of the Mōri, whose branches also ruled the neighboring Chōfu and Kiyosue domains and was assessed under the Kokudaka system with peak value of 369,000 koku. The Chōshū Domain was the most prominent anti-Tokugawa domain and formed the Satchō Alliance with the rival Satsuma Domain during the Meiji Restoration, becoming instrumental in the establishment of the Empire of Japan and the Meiji oligarchy. The Chōshū Domain was dissolved in the abolition of the han system in 1871 by the Meiji government and its territory was absorbed into Yamaguchi Prefecture.

The Tosa Domain (土佐藩, Tosa-han) was a feudal domain under the Tokugawa shogunate of Edo period Japan, controlling all of Tosa Province in what is now Kōchi Prefecture on the island of Shikoku. It was centered around Kōchi Castle, and was ruled throughout its history by the tozama daimyō Yamauchi clan. Many people from the domain played important roles in events of the late Edo period including Nakahama Manjirō, Sakamoto Ryōma, Yui Mitsue, Gotō Shōjirō, Itagaki Taisuke, Nakae Chōmin, and Takechi Hanpeita. Tosa Domain was renamed Kōchi Domain (高知藩, Kōchi-han) during the early Meiji period until it was dissolved in the abolition of the han system in 1871 and became Kōchi Prefecture.

The Matsudaira clan (松平氏, Matsudaira-shi) was a Japanese samurai clan that descended from the Minamoto clan. It originated in and took its name from Matsudaira village, in Mikawa Province (modern-day Aichi Prefecture). During the Sengoku period, the chieftain of the main line of the Matsudaira clan, Matsudaira Motoyasu became a powerful regional daimyo under Oda Nobunaga and Toyotomi Hideyoshi and changed his name to Tokugawa Ieyasu. He subsequently seized power as the first shōgun of the Tokugawa shogunate which ruled Japan during the Edo period until the Meiji Restoration of 1868. Under the Tokugawa shogunate, many cadet branches of the clan retained the Matsudaira surname, and numerous new branches were formed in the decades after Ieyasu. Some of those branches were also of daimyō status.

After the Meiji Restoration and the abolition of the han system, the Tokugawa and Matsudaira clans became part of the new kazoku nobility.

Gokishichidō (五畿七道; "five provinces and seven circuits") was the name for ancient administrative units organized in Japan during the Asuka period (AD 538–710), 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 until the 19th century.The Gokishichidō consisted of five provinces in the Kinai (畿内) or capital region, plus seven dō (道) or circuits, each of which contained provinces of its own.

When Hokkaido was included as a circuit after the defeat of the Republic of Ezo in 1869, the system was briefly called Gokihachidō (五畿八道; "five provinces and eight circuits"). The abolition of the han system abolished the -han (early modern feudal domains) in 1871, -dō/circuits and provinces were per se not abolished by the abolition of domains; but the prefectures that sprang from the domains became the primary administrative division of the country and were soon merged and reorganized to territorially resemble provinces in many places. "Hokkai circuit" (Hokkai-dō) was the only -dō that would survive as administrative division, but it was later increasingly treated as "Hokkai prefecture" (Hokkai-dō); finally after WWII, the -dō was fully regarded as a prefecture: from 1946, the prefectures (until then only -fu/-ken) were legally referred to as -dō/-fu/-ken, from 1947 as -to/-dō/-fu/-ken.

Chōfu Domain (長府藩, Chōfu-han) was a feudal domain under the Tokugawa shogunate of Edo period Japan, in what is now part of Shimonoseki, Yamaguchi Prefecture. It was centered around Kushizaki Castle and was ruled throughout its history by a cadet branch of the Mōri clan. Chōfu Domain was dissolved in the abolition of the han system in 1871. The domain was also called Nagato-Chōfu Domain (長門長府藩, Nagato-Chōfu-han) or Nagato-Fuchū Domain (長門府中藩, Nagato-Fuchū-han).

The Kaga Domain (加賀藩, Kaga-han), also known as the Kanazawa Domain (金沢藩, Kanazawa-han), was a domain of the Tokugawa Shogunate of Japan during the Edo period from 1583 to 1871.

The Kaga Domain was based at Kanazawa Castle in Kaga Province, in the modern city of Kanazawa, located in the Chūbu region of the island of Honshu. The Kaga Domain was ruled for its existence by the tozama daimyō of the Maeda, and covered most of Kaga Province and Etchū Province and all of Noto Province in the Hokuriku region. The Kaga Domain had an assessed kokudaka of over one million koku, making it by far the largest domain of the Tokugawa shogunate. The Kaga Domain was dissolved in the abolition of the han system in 1871 by the Meiji government and its territory was absorbed into Ishikawa Prefecture and Toyama Prefecture.