Answer:
The battle of Hastings happened because it all started off when King Edward died however he had no sons to rule the country. There is great confusion over who wants to be the next king. It was between King Harold the most powerful man in England or William King Edwards friend from Normandy.
However King Harold gets crowned in Westminster Abbey. Across the English Channel, William is not surprised that Harold is king but he is angry.H e says the English crown is promised to him by King Edward. So he ordered his army to go to invade England and fight Harold.
In Norway there is yet another person who wants to become king, Harold Hardrada his reason for being King was that his ancestors were king so he should be king so consequently he went over to England to battle also.
King Harold knew an invasion would come so he sent his earls Edwin and Morcar to raise and army to defend the North against the Norwegians. Harold himself raises an army to defend the south.
Harold's army waited all summer however nothing happened so consequently his amry had to start leaving as they were running out of food supplies and they needed help back on the farms.
Williams army is ready also however he cant land in England because the wind is against him.
Five hundred Norwegian ships land in the North of England. On the 20th of September the Norwegians beat the English in the Battle of Fulford.
A messenger races to Yorkshire to give news to the King Harold. He immediately sets off to the north and takes the Norwegians by surprise and defeats them at the battle of Stamford Bridge.
Later the Normans land but Harolds army are still recovering. Then Harold sets of with his army to the south again to battle the Normans.
14th October The Battle of Hastings the Normans face the English on a hillside near Hastings. The battle lasted all day however the battle finished when King Harold died.
On Christmas day William marches on London where the surviving English earls accept him as King. He is then crowned King of England.