What if the Vikings Stayed In America?

The Vikings sailed everywhere, even to Canada. But they eventually left. What if in an alternate timeline, the Vikings had stayed and continued their colonization of the New World? Here is one scenario.
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Music:
Medieval Myths 3- Andreas Ericson
Medieval Myths 18- Andreas Ericson
Scandanavian Folk 26- Traditional
Medieval Myths 9- Andreas Ericson
Lord of Dance 3 - Johannes Bornlof