Updated Prefecture Polygons now have mostly complete spatial coverage for the Dynastic administrative units from 1350 - 1911 CE. Prefectures from earlier periods, 221 BCE to 1350 CE, still have gaps i
This is a polygon dataset consisting of Standard Electoral Wards set in 1993. The data has been extracted from OSNI Largescale database and has been topologically cleansed and attributed to create...
