English: Map of the Kievan Rus in 1237. The names of tribes and peoples are in bold and yellow, the names of countries outside the Kievan Rus are in bold and black. The names of principalities of the Kievan Rus are in blue; if a principality bears a name which comes directly from the name of its capital (e.g. the Principality of Kiev), the complete name of the principalty is not on the map and the name of the capital is in blue.