<Li> Republic (1945--present) </Li> <Li> Years of Lead (1970s--1980s) </Li> <Tr> <Td> By topic (show) <Ul> <Li> List of historic states </Li> </Ul> <Ul> <Li> Citizenship </Li> <Li> Currency </Li> <Li> Economy </Li> <Li> Fashion </Li> <Li> Genetic </Li> <Li> Military </Li> <Li> Music </Li> <Li> Postage </Li> <Li> Railway </Li> </Ul> </Td> </Tr> <Ul> <Li> List of historic states </Li> </Ul>

What made italy city states unique in europe during the late middle ages