Medieval History

A decentralized political and economic system in which lords granted land (fiefs) to vassals in exchange for military service, loyalty, and other obligations, creating a hierarchical chain of mutual duties from king to peasant.

The economic system underpinning feudal society, in which a lord's estate (manor) was worked by serfs who were bound to the land and owed labor, produce, and fees in exchange for protection and the right to cultivate their own strips of land.

A series of religiously motivated military campaigns launched by Latin Christendom between 1095 and 1291, primarily aimed at recapturing the Holy Land from Muslim control, though later Crusades targeted other regions and peoples.

The prolonged conflict between the papacy and secular rulers, especially the Holy Roman Emperors, over who had the authority to appoint (invest) local church officials such as bishops and abbots.

A medieval intellectual movement that sought to reconcile Christian theology with classical philosophy, especially Aristotelian logic, through rigorous dialectical reasoning and systematic argumentation.

A catastrophic pandemic of bubonic plague that swept through Eurasia in the mid-14th century (peaking 1347-1351), killing an estimated one-third to one-half of Europe's population and triggering profound economic, social, and cultural upheaval.

A style of architecture that emerged in 12th-century France characterized by pointed arches, ribbed vaults, flying buttresses, and large stained-glass windows, enabling taller and more light-filled structures than Romanesque predecessors.

A complex multi-ethnic political entity in central Europe that traced its origins to Charlemagne's coronation in 800 CE and the later coronation of Otto I in 962 CE, claiming to be the successor of the ancient Roman Empire.

A charter of liberties sealed by King John of England in 1215 under pressure from rebellious barons, establishing the principle that the king was subject to the law and guaranteeing certain rights to free men.

The period from roughly 793 to 1066 CE during which Scandinavian Norsemen conducted raids, trading expeditions, and large-scale settlements across Europe, the North Atlantic, and beyond, fundamentally reshaping the political and cultural landscape.