Demographic trends in western Europe facilitated this “colonization.” The settlers—assured of non-public freedom, fastened rents, plus some measure of self-administration and operating beneath the so-referred to as German Legislation—Established new villages and cities or reorganized aged kinds. Towns gained official charters (Wrocław in 1242, Poznań in 1253, Kraków in 1257) https://polawede.tumblr.com/