Answer: edo

AnswerCrossword Clue
EDO... Period (time in Japanese history)
EDONigerian from Benin
EDOTokugawa shogunate's capital
EDOKwa language
EDONative of Benin
EDOTokyo's one-time name
EDOShogun's Tokyo
EDOA people of Nigeria
EDOCapital of Japan, to Commodore Perry
EDONipponese capital, once
EDOBackward poem from Tokyo?
EDONigerian native or tongue
EDOS Nigerian native
EDOTokyo of shoguns' era
EDONigerian language
EDOJapan's capital, formerly
EDOJapan's medieval ... Castle
EDOJapanese historical period from the 17th to 19th centuries
EDOShogunate headquarters
EDO19th-century samurai home
EDO... Period, depicted in "The Last Samurai"
EDOLast shogunate capital
EDOMaestro ... de Waart
EDOJapan's ...-Tokyo Museum
EDOShogunate capital
EDOOld Far Eastern capital
EDONigerian native or language
EDO...-Tokyo Museum
EDOCapital until 1868
EDOOld Asian capital
EDOSamurai's home
EDOTokyo's ... Castle
EDOJapan's ... Period (1603-1867)
EDOJapan's ... Castle
EDORiver bordering Tokyo
EDO... Period (part of Japanese history)
EDO... Period, 1603-1868
EDOHonshu's ... River
EDOTokyo once
EDOTokyo formerly