The Middle Ages marked a pivotal era in British literature, spanning from the 5th to 15th centuries. This period saw the evolution of language from Old English to Middle English, influenced by historical events like the Norman Conquest and the introduction of the printing press. Key literary works emerged during this time, including Beowulf, The Canterbury Tales, and Sir Gawain and the Green Knight. These texts explored themes of chivalry, religion, and social criticism, employing techniques like alliteration and frame narratives that continue to influence literature today.