The Battle of Hastings was the Norman conquest of England. The Norman conquest influenced the English language(Old English evolved syncretically with french influence,) centralized the lcoal government system, and replaced the the olde English aristocracy.
"This is the story of the Battle of Hastings that was fought on the 14th October 1066. An event so significant, it completely changed the course of English history. To speak of this battle without recourse to the events that came before, would be an injustice to the people of this island who have fought and died for her. What makes this event so important to the English is the immutable fact that it was the last time any foreign power was to conquer her. Without doubt, a lesson that became indelibly etched into this island race - for ever. " Read all about it here: http://www.battle1066.com/