Sweden | Norway | Denmark made #thuglife a thing across modern Scotland, northern and eastern England, much of Ireland, established DaneLaw, crashed the old Roman bathhouses, and turned Dublin into a major European slave teading hub.
The Danelaw originated from the invasion of *the Great Heathen Army* into England in the year 865, although the term was not used to describe a geographic area until the 11th century.
https://en.wikipedia.org/wiki/Danelaw