The term "medieval" refers to the Middle Ages, a period in European history that lasted from approximately the 5th to the late 15th century. This era followed the fall of the Roman Empire and is characterized by feudalism, the rise of knighthood, and the influence of the Christian Church. During the medieval period, society was structured around a system of lords, vassals, and serfs. Important cultural developments included the construction of castles, the establishment of universities, and the creation of notable literature, such as Dante's Divine Comedy and Chaucer's The Canterbury Tales.