Yes
How long ago did vikings live
Norway, Sweden, Denmark.
when there moms told them to
This is true.
nothing much u
No. They were hired soldiers of the ruler of Constantinople.
The Vikings DID invade so the answer to your question is "yes." There are still place names in the UK that were given by the Vikings.
north (scandanavia)
they didnt because that was thei home turf
Yes the coast of Normandy and even further south were (invaded) part of the Vikings trading areas.
Some countries did not like the Vikings because they would invade their lands and pillage, rape, murder, destroy.