<Tr> <Th_colspan="2"> Date (s) </Th> <Th> Event (s) </Th> </Tr> <Tr> <Td_colspan="2"> 1874--81 </Td> <Td> Growing anti-government terrorist movement and government reaction . </Td> </Tr> <Tr> <Td_colspan="2"> 1881 </Td> <Td> Alexander II assassinated by revolutionaries; succeeded by Alexander III . </Td> </Tr> <Tr> <Td_colspan="2"> 1883 </Td> <Td> First Russian Marxist group formed . </Td> </Tr>

Who lost power in the russian revolution in march 1917