why was the tokugawa period given its name
Edo period The Edo period (江戸時代, Edo jidai) or Tokugawa period (徳川時代, Tokugawa jidai) is the period between 1603 and 1868 in the history of Japan, when Japanese society was under the rule of the Tokugawa shogunate and the country's 300 regional daimyō. The period was characterized by economic growth, strict social order, isolationist foreign policies, a stable population, "no more wars", and popular enjoyment of arts and culture. The shogunate was officially established in Edo on March 24, 1603, by Tokugawa Ieyasu. The period came to an end with the Meiji Restoration on May 3, 1868, after the fall of Edo.
Daimyō Subordinate only to the shōgun, daimyōs were the most powerful feudal rulers from the 10th century to the middle 19th century in Japan. From the Shugo of the Muromachi period through the Sengoku to the daimyōs of the Edo period, the rank had a long and varied history. The backgrounds of daimyō also varied considerably; while some daimyō clans, notably the Mōri, Shimazu and Hosokawa, were cadet branches of the Imperial family or were descended from the kuge, other daimyōs were promoted from the ranks of the samurai, notably during the Edō period.