Why did the Norman conquest (1066) change life in England?
Politically: introduction of the Feudal system, control for the King and all had to swear loyalty to him [new ruling class + more power for the king]
Commercially: Normans brought new people into trade and finance, English wool trade began, Jews working in finance [money and jobs improved country's finance]
Culturally: Norman French became language of the aristocracy, French words entered English [upper and lower class divided by language and culture]
Environmentally: Normans built stone castles and cathedrals/churches