Kievan Rus' (Old East Slavic Рѹ́сь, Рѹ́сьскаѧ землѧ, Greek Ῥωσία, Latin Rus(s)ia, Ruscia, Ruzzia, Rut(h)enia, Old Norse Garðaríki) was a loose federation of East Slavic tribes in Europe from the late 9th to the mid-13th century, under the reign of the Rurik dynasty. The modern peoples of Belarus, Ukraine, and Russia all claim Kievan Rus' as their cultural ancestors.