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Which Japanese domains supplied many of the leaders of the Meiji Restoration?

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Map showing the territorial expansion of the Japanese Empire from 1870 to 1942 across East and Southeast Asia and the Pacific. The map uses color codes to indicate the original Japanese territory in 1870, subsequent acquisitions, and the farthest extent of Japanese occupation and conquest by 1942, including parts of China, Korea, Manchuria, Southeast Asia, and numerous Pacific islands. An inset map displays the broader reach of Japanese control at its peak. — Empire of Japan The Empire of Japan, 1870–1942.

The Meiji government was primarily dominated by leaders from the domains of Satsuma and Chōshū. These two domains formed a critical alliance that utilized their familiarity with Western weaponry to overthrow the Tokugawa shogunate and restore imperial rule.12

To broaden support for their policies and build a unified national government, these leaders also enlisted the cooperation of influential figures from other domains, most notably Tosa, Saga, and Echizen.1

While the movement had its genesis in the powerful fiefs of the southwest, the resulting Meiji administration sought to centralize power and modernize Japan by ending the feudal system, a process that eventually led to the dissolution of the samurai class itself.31