Answer:
The Battle of Hastings took place on October 14, 1066 about ten kilometers north of the city of Hastings in East Sussex. It opposed the last Anglo-Saxon king of England, Harold Godwinson, to the duke of Normandy William the Conqueror, who finally obtained a decisive victory.
Hastings was part of the crisis of succession opened by the death of the King of England Edward the Confessor in January 1066. Elected successor of Edward, Harold had to face the invasions launched by pretenders to the crown. He defeated Norwegian King Harald Hardrada on September 25 at Stamford Bridge in Yorkshire, but at the same time, Duke William of Normandy landed in Sussex, in the south of the country, more than 350 km away from there. Harold rushed to meet him in a forced march.
The battle lasted from morning until the evening of October 14th. Posted at the top of Caldbec Hill, the English troops resisted the first enemy assaults behind their wall of shields. The Normans then resorted to a ruse: the left wing pretended to flee before turning on the English launched in their pursuit. The English army finally yielded and disbanded after Harold's death, and the victory fell to William.
Thanks to his victory, the Duke of Normandy was crowned King of England on Christmas Day at Westminster. Even though the Norman conquest of England was not really completed until several years later, the Battle of Hastings marked a turning point in the history of England, as it was the opening of which is known as the Anglo-Norman period.