Just as in the cities, peasant revolutionaries seized land in the countryside and organized collective farms. According to professor Edward E. Malefakis, between half and two-thirds of all cultivated land in Republican Spain was seized. The targets were mainly small and medium landholders, since most of the large landholdings had fallen to the nationalists. However, historian Michael Seidman argues that while collectivisation was prominent, it was still a minority practice. Seidman argues that most peasants opted for individual farming and collectives tended to exist within a sea of small- and medium-property holders and that even within the region of Aragon, which was considered more revolutionary than Catalonia and a CNT stronghold, only about 40% of land was collectivised.