<Tr> <Td> <Ul> <Li> Castra </Li> <Li> Siege engines </Li> </Ul> <Ul> <Li> Triumphal arches </Li> <Li> Roads </Li> </Ul> </Td> </Tr> <Ul> <Li> Castra </Li> <Li> Siege engines </Li> </Ul> <Ul> <Li> Triumphal arches </Li> <Li> Roads </Li> </Ul> <Tr> <Td> Political history (show) </Td> </Tr>

How was the government of the roman republic different from the government of the roman empire