The Buzhans or (more correct) Buzhane (Russian: Бужане,Ukrainian: Бужани) were one of the tribal unions of Early East Slavs. They are mentioned as Buzhane in the Primary Chronicle. It appears that the name of the tribe derives from the Bug River, where they chose to settle down. According to one 10th century chronicle, the Buzhans had 230 "cities" (fortresses). Some historians believe that the Buzhans and the Volhynians used to be called the Dulebs. The Buzhans were last mentioned in a chronicle in the 10th century before their subjugation by Kievan Rus. Viewed historically or developmentally, a tribe consists of a social formation existing before the development of, or outside of, states. ... The East Slavs are the ethnic group that evolved into the Russian, Ukrainian and Belarusian peoples. ... The Russian Primary Chronicle (Russian: Повесть временных лет, Povest vremennykh let, which is often translated in English as Tale of Bygone Years), is a history of the early East Slavic state, Kievan Rus, from around 850 to 1110. ... Bug at Wlodawa One of the two rivers called Bug (pronounced Boog), the Western Bug, or Buh (Belarusian: Захо́дні Буг; Russian: За́падный Буг; Ukrainian: Західний Буг, Zakhidnyi Buh), flows from central Ukraine to the west, forming part of the boundary between that nation and Poland, passes along the Polish-Belarusian... ( 9th century - 10th century - 11th century - other centuries) As a means of recording the passage of time, the 10th century was that century which lasted from 901 to 1000. ... Generally a chronicle (Latin chronica) is historical account of facts and events in chronological order. ... Fortifications (Latin fortis, strong, and facere, to make) are military constructions designed for defensive warfare. ... The Dulebs (Дулёбы in Russian) were a tribe of Early East Slavs between the 6th (still questionable) and the 10th centuries. ... Kievan Rus′ (Ки́евская Ру́сь, Kievskaya Rus in Russian; Київська Русь, Kyivs’ka Rus’ in Ukrainian) was the early, mostly East Slavic¹ state dominated by the city of Kiev (ru: Ки́ев, Kiev; uk: Ки́їв, Kyiv), from about 880 to the middle of the 12th century. ...