My question is the following :

• Why did the Vikings keep sailing to the west ?

They went from Norway / Sweden to Great Britain, the Faroe Islands, Iceland, Greenland and finally Isle aux Meadows (for a short period of time). Never stopping for very long. Why ?

I would guess that their main reason would be acquiring more arable land but event then it seems a bit strange that they took so many risks for this goal.

• Did they have so many enemies in their previously discovered / conquered territories that they felt they weren't safe ?

Thank you in advance for your answers !