Medievalism is a system of belief and practice inspired by the Middle Ages of Europe, or by devotion to elements of that period, which have been expressed in areas such as architecture, literature, music, art, philosophy, scholarship, and various vehicles of popular culture. Since the 17th century, a variety of movements have used the medieval period as a model or inspiration for creative activity, including Romanticism, the Gothic revival, the pre-Raphaelite and arts and crafts movements, and neo-medievalism . Historians have attempted to conceptualize the history of non-European countries in terms of medievalisms, but the approach has been controversial among scholars of Latin America, Africa, and Asia.

The fall of the Western Roman Empire, also called the fall of the Roman Empire or the fall of Rome, was the loss of central political control in the Western Roman Empire, a process in which the Empire failed to enforce its rule, and its vast territory was divided between several successor polities. The Roman Empire lost the strengths that had allowed it to exercise effective control over its Western provinces; modern historians posit factors including the effectiveness and numbers of the army, the health and numbers of the Roman population, the strength of the economy, the competence of the emperors, the internal struggles for power, the religious changes of the period, and the efficiency of the civil administration. Increasing pressure from invading barbarians outside Roman culture also contributed greatly to the collapse. Climatic changes and both endemic and epidemic disease drove many of these immediate factors. The reasons for the collapse are major subjects of the historiography of the ancient world and they inform much modern discourse on state failure.