<Tr> <Td_colspan="2"> 1903 </Td> <Td> Second Congress of Russian Social Democratic Labour Party . Beginning of split between Bolsheviks and Mensheviks . </Td> </Tr> <Tr> <Td_colspan="2"> 1904--5 </Td> <Td> Russo - Japanese War; Russia loses war . </Td> </Tr> <Tr> <Td_colspan="2"> 1905 </Td> <Td> Revolution of 1905 . </Td> </Tr> <Tr> <Td> 1905 </Td> <Td> January </Td> <Td> Bloody Sunday in Saint Petersburg . </Td> </Tr>

Which statement is true regarding the bolsheviks and the february revolution of 1917