The Viking Age in England began with raids on coastal monasteries in the late 8th century. These attacks escalated into full-scale invasions, culminating in the arrival of the Great Heathen Army in 865 CE. The Vikings conquered large parts of England, establishing the Danelaw in the north and east. King Alfred the Great of Wessex led the Anglo-Saxon resistance, defeating the Vikings at Edington in 878 CE. This led to the Treaty of Wedmore, dividing England between Anglo-Saxon and Viking rule. Over time, Viking settlers integrated into Anglo-Saxon society, leaving a lasting impact on English culture, language, and legal traditions.