<Tr> <Td> Uganda </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> Africa </Td> </Tr> <Tr> <Td> Ukraine </Td> <Td> </Td> <Td> 6 </Td> <Td> </Td> <Td> 7 </Td> <Td> </Td> <Td> Europe and North America </Td> </Tr> <Tr> <Td> United Kingdom </Td> <Td> </Td> <Td> 26 </Td> <Td> </Td> <Td> 31 </Td> <Td> </Td> <Td> Europe and North America </Td> </Tr> <Tr> <Td> United States </Td> <Td> 12 </Td> <Td> 10 </Td> <Td> </Td> <Td> 23 </Td> <Td> </Td> <Td> Europe and North America </Td> </Tr>

Which country has most number of unesco world heritage site