Well, because they are named after what they do. They get it from the word "VIK" which means "small bay" in Swedish.
the answer is The Vikings
obviously it would be vikette
A Viking slave was called a thrall.
Viking nobles were often called karls, or earls.
Mead.
Mail.
rune
VALHALLA
berserkers
longboats
"Danelaw"
helmet