The Norman invasion refers to the conquest of England by the Normans in 1066. Led by William the Conqueror, the Duke of Normandy, this invasion began with the famous Battle of Hastings. The Normans defeated the English forces, led by King Harold II, marking a significant turning point in English history. Following the invasion, the Normans established control over England, leading to major changes in governance, culture, and land ownership. The introduction of the feudal system transformed society, while the construction of castles and the use of the French language influenced English culture for centuries to come.