Saigō Takamori in the context of "Yojijukugo"

The Meiji era (明治時代, Meiji jidai) was an era of Japanese history that extended from October 23, 1868, to July 30, 1912. The Meiji era was the first half of the Empire of Japan, when the Japanese people moved from being an isolated feudal society at risk of colonization by Western powers to the new paradigm of a modern, industrialized nation state and emergent great power, influenced by Western scientific, technological, philosophical, political, legal, and aesthetic ideas. As a result of such wholesale adoption of radically different ideas, the changes to Japan were profound, and affected its social structure, internal politics, economy, military, and foreign relations. The period corresponded to the reign of Emperor Meiji. It was preceded by the Keiō era and was succeeded by the Taishō era, upon the accession of Emperor Taishō.

The rapid modernization during the Meiji era was not without its opponents, as the rapid changes to society caused many disaffected traditionalists from the former samurai class to rebel against the Meiji government during the 1870s, most famously Saigō Takamori, who led the Satsuma Rebellion. However, there were also former samurai who remained loyal while serving in the Meiji government, such as Itō Hirobumi and Itagaki Taisuke.

The Satsuma Rebellion, also known as the Seinan War (Japanese: 西南戦争, Hepburn: Seinan Sensō; lit. 'Southwestern War'), was a revolt of disaffected samurai against the new imperial government of the Empire of Japan, nine years into the Meiji era. Its name comes from the Satsuma Domain, which had been influential in the Restoration and became home to unemployed samurai after military reforms rendered their status obsolete. The rebellion lasted from 29 January until 24 September of 1877, when it was decisively crushed, and its leader, Saigō Takamori, was shot and mortally wounded.

Saigō's rebellion was the last and most serious of a series of armed uprisings against the new government of the Empire of Japan, the predecessor state to modern Japan. The rebellion was very expensive for the government, which forced it to make numerous monetary reforms including leaving the gold standard. The conflict effectively ended the samurai class and ushered in modern warfare fought by conscript soldiers instead of military nobles. It is also the most recent civil war fought in Japan.

The Meiji oligarchy was the new ruling class of Meiji period Japan. In Japanese, the Meiji oligarchy is called the domain clique (藩閥, hambatsu).

The members of this class were adherents of kokugaku and believed they were the creators of a new order as grand as that established by Japan's original founders. Two of the major figures of this group were Ōkubo Toshimichi (1832–78), son of a Satsuma retainer, and Satsuma samurai Saigō Takamori (1827–77), who had joined forces with Chōshū, Tosa, and Hizen to overthrow the Tokugawa shogunate. Okubo became minister of finance and Saigō a field marshal; both were imperial councillors. Kido Koin (1833–77), a native of Chōshū, student of Yoshida Shōin, and conspirator with Ōkubo and Saigō, became minister of education and chairman of the Governors' Conference and pushed for constitutional government. Also prominent were Iwakura Tomomi (1825–83), a Kyoto native who had opposed the Tokugawa and was to become the first ambassador to the United States, and Ōkuma Shigenobu (1838–1922), of Hizen, a student of Rangaku, Chinese, and English, who held various ministerial portfolios, eventually becoming prime minister in 1898.

Taitō (台東区, Taitō-ku) is a special ward in the Tokyo Metropolis in Japan. In English, it is known as Taitō City.

As of May 1, 2015, the ward has an estimated population of 186,276, and a population density of 18,420 persons per km. The total area is 10.11 square kilometres (3.90 sq mi). This makes Taito ward the smallest of Tokyo's wards in area, and third-smallest in population.

The Seikanron (Japanese: 征韓論; Korean: 정한론; lit. 'Advocacy of a punitive expedition to Korea' or 'Proposal to Punish Korea' or 'Argument for a Conquest of Korea') was a major political debate in Japan during 1873 regarding a punitive expedition against Korea. The Seikanron split the Meiji government and the restoration coalition that had been established against the bakufu, but resulted in a decision not to send a military expedition to Korea.