Background
The Tokugawa shogunate had governed Japan since the Battle of Sekigahara in 1600 and the formal investiture of Tokugawa Ieyasu as shōgun in 1603. The system — the Bakufu — combined the formal sovereignty of the emperor at Kyoto with the substantive political-military authority of the Tokugawa shōgun at Edo (modern Tokyo). It had presided over 260 years of stable domestic peace, the gradual reorganization of Japanese economic and political life into approximately 250 hereditary territorial domains (han) under their daimyō lords, and the Sakoku (closed-country) foreign-policy regime that had restricted foreign access to Japan to a small Dutch trading station at Nagasaki since the 1630s.
The Sakoku system collapsed under American naval pressure in the 1850s. Commodore Matthew Perry of the United States Navy arrived at Edo Bay with a squadron of four warships in July 1853, demanding that Japan open diplomatic and commercial relations. The shogunate, observing the simultaneous Western military reduction of Qing China during the Opium Wars, capitulated. The Treaty of Kanagawa (1854), the Harris Treaty (1858), and subsequent commercial treaties with Britain, France, Russia, and the Netherlands established a treaty-port system in Japan substantially modeled on the Chinese precedent.
The shogunate’s diplomatic surrender produced an internal political crisis. The slogan Sonnō jōi — “revere the emperor, expel the barbarian” — mobilized substantial samurai opposition to the Tokugawa across the 1860s. The decisive coalition consolidated around the western domains of Satsuma (modern Kagoshima) and Chōshū (modern Yamaguchi), traditional Tokugawa opponents whose post-1860 leadership had been substantially radicalized by direct experience of Western military intervention (British and Dutch naval bombardments of Satsuma in 1863 and Chōshū in 1864 respectively).
The Restoration
The shōgun Tokugawa Yoshinobu agreed in November 1867 to formally return political authority to the Emperor Kōmei’s successor, the 14-year-old Emperor Meiji, in exchange for retaining his position as the senior member of an emperor-headed council government. The Satsuma-Chōshū coalition rejected the compromise. On 3 January 1868, court nobles and loyalist military forces seized the imperial palace at Kyoto, dismissed Yoshinobu from his offices, and declared the formal Restoration of direct imperial rule.
The Boshin War (January 1868 – June 1869) was the resulting civil war. Tokugawa loyalist forces — initially nominally led by Yoshinobu, then by various successor commanders after Yoshinobu’s January 1868 surrender at Edo — were progressively defeated in a sequence of campaigns up the Honshu coast and finally on Hokkaido. The last Tokugawa loyalist stronghold, the Republic of Ezo at Hakodate, surrendered in June 1869.
The Meiji reforms
The new imperial government — the Meiji oligarchy, composed of senior samurai officials from Satsuma, Chōshū, Tosa, and Hizen — implemented over the following two decades the most comprehensive single program of state-directed institutional reform in the history of any major non-Western state.
The Charter Oath (6 April 1868) was the foundational political document. Its five articles committed the new government to deliberative assemblies, social mobility, the abolition of inherited class restrictions, the breaking of “evil customs of the past,” and the active acquisition of “knowledge from throughout the world.”
Abolition of the domains (1869–1871). The 250-odd han of the Tokugawa system were progressively dissolved into 72 (later 47) centrally-administered prefectures. The hereditary daimyō class was pensioned off with government bonds.
Abolition of the samurai class (1869–1876). The traditional warrior class — approximately 2 million people in the late Tokugawa period — lost its hereditary privileges, its right to wear swords (1876), and its hereditary stipends (commuted to government bonds 1876). The result was a substantial impoverishment of the former samurai and a series of regional samurai rebellions through the 1870s, the largest of which — the Satsuma Rebellion under Saigō Takamori in 1877 — was suppressed by the new conscript army at substantial cost.
Land tax reform (1873). The traditional rice-based agricultural tribute was replaced by a fixed cash tax on landowners, producing the financial foundation for the new state’s modernization program.
Universal conscription (1873). The Tokugawa-era restriction of military service to the samurai class was replaced by universal male conscription for the new imperial army.
Universal compulsory education (1872 onward). The new education system rapidly produced one of the highest literacy rates in late-19th-century Asia.
Industrial-economic modernization. State-owned model industries (textiles, mining, shipbuilding, the railway system, the telegraph network) were established under government direction through the 1870s and 1880s and then progressively privatized to a small group of well-connected zaibatsu (industrial-financial conglomerates: Mitsui, Mitsubishi, Sumitomo, Yasuda). Japanese industrial output grew at approximately 6–8% annually through the late Meiji period.
The Meiji Constitution (promulgated 11 February 1889, in effect 1890). The first written constitution in Asian history, modeled substantially on the Prussian constitution of 1851. It established an Imperial Diet (a bicameral legislature), preserved substantial imperial executive authority, and provided the formal political framework that would govern Japan until the post-WWII constitution of 1947.
External expansion
Japanese institutional modernization produced — within a single political generation — military and economic capabilities competitive with the great powers of late-19th-century Europe. The First Sino-Japanese War (1894–1895) defeated Qing China and acquired Taiwan as a Japanese colony. The Russo-Japanese War (1904–1905) — the first modern military victory of a non-Western power over a European great power — established Japanese dominance over Korea (formally annexed 1910) and southern Manchuria.
By the death of Emperor Meiji in July 1912, Japan was an industrialized constitutional monarchy with a substantial empire, a competitive navy and army, a Western-style legal and educational system, and the diplomatic-political status of a recognized great power.
Legacy
The Meiji Restoration is the foundational political event of modern Japan and one of the most-studied cases of successful state-directed institutional transformation in modern history. The institutional model — comprehensive top-down adoption of Western political-economic-military institutions while retaining substantial cultural-political continuity with the pre-modern tradition — has been continuously studied (and sometimes consciously imitated) by reformist movements across the non-Western world from the late 19th century to the present.
The political-economic trajectory established by the Meiji reforms also produced the conditions that would lead, through the militarist 1930s, to Japanese imperial expansion across East Asia and the Pacific, the catastrophic Pacific War of 1941–1945, and the post-war American occupation and reconstruction. The modern Japanese state — a constitutional monarchy, parliamentary democracy, advanced industrial economy, and major regional power — descends directly from the institutional foundations laid during the Meiji period.