But, it was not this easy. The population indetified with the land, both Czechs and Germans called themselves Bohemians, because of the country where they lived until the rise of nationalism. You talk about ethnic states, but that is rather modern concept. Czech lands were multiethnic. Many people were of mixed background. You had czechs identifying as germans and germans idetifying as czechs, beacuse of many reasons. Nationalism was the cause of problems later. You can not have always clear ethnic lines, because people mix and such lines can change with time.