<Tr> <Td> 1898 invasion of Spain <Ul> <Li> Puerto Rico </Li> <Li> Cuba </Li> </Ul> </Td> <Td> United States </Td> <Td> Spain </Td> </Tr> <Ul> <Li> Puerto Rico </Li> <Li> Cuba </Li> </Ul> <Tr> <Td> 1897 invasion of Greece </Td> <Td> Ottoman Empire </Td> <Td> Greece </Td> </Tr> <Tr> <Td> 1897 invasion of Crete </Td> <Td> Greece </Td> <Td> Ottoman Empire </Td> </Tr>

When was the last time a country was conquered