The late Tokugawa shogunate or last shogun (幕末; Bakumatsu) is the period between 1853 and 1867 during which Japan ended its isolationist foreign policy and modernized from a feudal shogunate to the Meiji government. It is at end of Edo period and preceeded by Meiji era.
... conjugation include prefixes, suffixes, infixes, and reduplication. Also extremely common is vowel gradation; every root has (not necessarily all distinct) zero, guna[?], ...