To honor agreements made with enemies, to not mutilate dead bodies, and to not harm women, children, old ppl, or civilians
Explanation:
The Viking age ended when the raids stopped. ... It was no longer profitable or desirable to raid. The Vikings weren't conquered. Because there were fewer and fewer raids, to the rest of Europe they became, not Vikings, but Danes and Swedes and Norwegians and Icelanders and Greenlanders and Faroese and so on
A government keeps its people safe by investing tax money into the military, healthcare and sanitation.
Yes they did, they didn't have enough power to rule over the land! i hope this helped!