<Ul> <Li> Timeline </Li> </Ul> <Tr> <Th> By topic </Th> </Tr> <Tr> <Td> <Ul> <Li> Constitution </Li> <Li> Diplomacy </Li> <Li> Economy </Li> <Li> Federation </Li> <Li> Immigration </Li> <Li> Indigenous people </Li> <Li> Military </Li> <Li> Monarchy </Li> <Li> Rail transport </Li> </Ul> </Td> </Tr> <Ul> <Li> Constitution </Li> <Li> Diplomacy </Li> <Li> Economy </Li> <Li> Federation </Li> <Li> Immigration </Li> <Li> Indigenous people </Li> <Li> Military </Li> <Li> Monarchy </Li> <Li> Rail transport </Li> </Ul>

Outline two reasons why the idea of a united australia became popular during the 1880s and 1890s