<Tr> <Td> Liège </Td> <Td> Luik </Td> <Td> Liège </Td> <Td> Lüttich </Td> <Td> Liège (Dutch: Luik) (German: Lüttich) </Td> <Td> Liège (Dutch: Luik) (German: Lüttich) </Td> <Td> 3,844 </Td> <Td> 1,098,688 </Td> </Tr> <Tr> <Td> Limburg </Td> <Td> Limburg </Td> <Td> Limbourg </Td> <Td> Limburg </Td> <Td> Hasselt </Td> <Td> Hasselt </Td> <Td> 2,414 </Td> <Td> 863,425 </Td> </Tr> <Tr> <Td> Luxembourg </Td> <Td> Luxemburg </Td> <Td> Luxembourg </Td> <Td> Luxemburg </Td> <Td> Arlon (Dutch: Aarlen) (German: Arel) </Td> <Td> Arlon (Dutch: Aarlen) (German: Arel) </Td> <Td> 4,443 </Td> <Td> 280,327 </Td> </Tr> <Tr> <Td> Namur </Td> <Td> Namen </Td> <Td> Namur </Td> <Td> Namur </Td> <Td> Namur (Dutch: Namen) </Td> <Td> Namur (Dutch: Namen) </Td> <Td> 3,664 </Td> <Td> 489,204 </Td> </Tr>

What was the area of western belgium called in the 15th century