What major event began in 1066 and led to significant changes in England?

The major event that began in 1066 and led to significant changes in England is the Norman Conquest. This pivotal moment in history was marked by William the Conqueror, the Duke of Normandy, invading England and defeating King Harold II at the Battle of Hastings.

The Norman Conquest had profound effects on English society, government, and culture. It resulted in the introduction of Norman French as the language of the ruling class, thereby influencing the development of the English language. Feudalism was also established, changing land ownership and social hierarchies in England. The architectural landscape shifted with the construction of castles and cathedrals in Norman style, which are significant historical landmarks today.

These changes laid the groundwork for the evolution of the English state and significantly impacted its legal and political systems. The event is often regarded as a turning point that shaped the course of English history, making it a crucial element for students to understand in the context of medieval England.