Feudalism: A political system prevalent in medieval Europe where power was decentralized among feudal lords who controlled land in exchange for military service and labor from peasants.
Protestant Reformation: A religious movement in the 16th century that aimed to reform the Roman Catholic Church and resulted in the creation of Protestant branches of Christianity, such as Lutheranism and Calvinism.
Enlightenment: An intellectual and cultural movement during the 18th century that emphasized reason, science, individual rights, and challenged traditional authority.