Final answer:
The Danelaw was a period in English history when a large part of England was under the control of the Viking invaders, known as the Danes. It had its own set of laws and customs.
Step-by-step explanation:
The Danelaw refers to a period in English history when a large part of England was under the control of the Viking invaders, known as the Danes. It was established through a series of treaties and agreements between the Vikings and the Anglo-Saxon rulers.
The Danelaw existed from the late 9th century to the early 11th century and had its own set of laws and customs.