<P> Timelines of the great powers since the end of the Napoleonic Wars in the early 19th century: </P> <Table> <Tr> <Th> 1815 </Th> <Th> 1878 </Th> <Th> 1900 </Th> <Th> 1919 </Th> <Th> 1939 </Th> <Th> 1945 </Th> <Th> c. 2000 </Th> <Th> </Th> <Td> </Td> </Tr> <Tr> <Td> Austria </Td> <Td> Austria - Hungary </Td> <Td> Austria - Hungary </Td> <Td> </Td> </Tr> <Tr> <Td> British Empire </Td> <Td> British Empire </Td> <Td> British Empire </Td> <Td> British Empire </Td> <Td> United Kingdom </Td> <Td> United Kingdom </Td> <Td> United Kingdom </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> China </Td> <Td> China </Td> </Tr> <Tr> <Td> France </Td> <Td> France </Td> <Td> France </Td> <Td> France </Td> <Td> France </Td> <Td> France </Td> <Td> France </Td> </Tr> <Tr> <Td> Prussia </Td> <Td> Germany </Td> <Td> Germany </Td> <Td> </Td> <Td> Germany </Td> <Td> </Td> <Td> Germany </Td> </Tr> <Tr> <Td> </Td> <Td> Italy </Td> <Td> Italy </Td> <Td> Italy </Td> <Td> Italy </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> Japan </Td> <Td> Japan </Td> <Td> Japan </Td> <Td> </Td> <Td> Japan </Td> </Tr> <Tr> <Td> Russia </Td> <Td> Russia </Td> <Td> Russia </Td> <Td> </Td> <Td> Soviet Union </Td> <Td> Soviet Union </Td> <Td> Russia </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> United States </Td> <Td> United States </Td> <Td> United States </Td> <Td> United States </Td> <Td> United States </Td> </Tr> </Table> <Tr> <Th> 1815 </Th> <Th> 1878 </Th> <Th> 1900 </Th> <Th> 1919 </Th> <Th> 1939 </Th> <Th> 1945 </Th> <Th> c. 2000 </Th> <Th> </Th> <Td> </Td> </Tr> <Tr> <Td> Austria </Td> <Td> Austria - Hungary </Td> <Td> Austria - Hungary </Td> <Td> </Td> </Tr>

What are the five major powers of congress