The social structure of the Byzantine Greeks was primarily supported by a rural, agrarian base that consisted of the peasantry, and a small fraction of the poor. These peasants lived within three kinds of settlements: the "chorion" or village, the "agridion" or hamlet, and the "proasteion" or estate. Many civil disturbances that occurred during the time of the Byzantine Empire were attributed to political factions within the Empire rather than to this large popular base. Soldiers among the Byzantine Greeks were at first conscripted amongst the rural peasants and trained on an annual basis. As the Byzantine Empire entered the 11th century, more of the soldiers within the army were either professional men-at-arms or mercenaries.