The document compares aspects of ancient, medieval, and modern societies and time periods. It discusses the social classes of nobles, tradesmen, and peasants in medieval Europe. Peasants lived off the land and were sometimes called serfs, living in crude housing and owing labor to nobles in exchange for protection. The document also contrasts features of Roman and feudal rule, noting Rome had representative government while feudal society was characterized by ignorance. Additionally, it provides details on the Crusades, the Bubonic Plague, and puts events in chronological order.