while similar conflicts among social classes may be found all over europe, nowhere were the nobility as dominant at the time as in the polish–lithuanian commonwealth. there is, however, much debate among historians as to which processes most affected those developments, since until the wars and crises of the mid-17th century the cities of the commonwealth had not markedly lagged in size and wealth behind their western counterparts. the commonwealth did have numerous towns and cities, commonly founded on magdeburg rights. some of the largest trade fairs in the commonwealth were held at lublin. see the geography section, below, for a list of major cities in the commonwealth (commonly capitals of voivodships).