The Middle English period spans from the Norman conquest in 1066 to the Renaissance, characterized by three phases: early, high, and late Middle Ages, with significant French cultural influence. The social structure was hierarchical with distinct classes: aristocracy, clergy, and peasantry, each having specific roles and languages. The era saw the evolution of English literature, heavily influenced by French literature, with notable works in chivalric romance and allegory, alongside the impactful writings of figures like Chaucer, Dante, and Boccaccio.