<Tr> <Td> Sarmatians </Td> <Td> 5th century BCE--4th century CE </Td> </Tr> <Tr> <Td> Early Slavs / Rus' </Td> <Td> pre-9th century </Td> </Tr> <Tr> <Td> Khazar Khaganate </Td> <Td> 7th--10th century </Td> </Tr> <Tr> <Td> Rus' Khaganate </Td> <Td> 9th century </Td> </Tr>

Who had ruled russia for hundreds of years prior to 1917