During the Middle Ages, the king was the most powerful figure and feudal systems like fiefs were used as currency. Society was divided into classes like vassals, knights, and serfs. Entertainment was limited and art was restricted to religious themes. Religion centered around the Pope and church doctrine. Science was limited to explanations involving God. During the Renaissance, money replaced feudal systems, more serfs were needed to support economic changes, and society engaged in new pastimes like music and parties. Common people could pursue careers as artists and thinkers. Individualism and secular interests in art, literature, and science grew, challenging religious authority.