Emperor Lothair II re-established feudal sovereignty over Poland, Denmark and Bohemia from 1135 and appointed margraves to turn the borderlands into hereditary fiefs and install a civilian administration. There is no discernible chronology of the immigration process as it took place in many individual efforts and stages, often even encouraged by the Slavic regional lords. However, the new communities were subjected to German law and customs. Total numbers of settlers were generally rather low and, depending on who held a numerical majority, populations usually assimilated into each other. In many regions only enclaves would persist, like Hermannstadt, founded by the Transylvanian Saxons in the medieval Hungarian Kingdom(today in Romania) who called on by Geza II. in 1147called those part of Transylvania as "Altland" to distinguish it from later immigrant Saxon settlements what established about 1220 by Teutonic Order