Based on the map, where were warships built​

The needs to be a map so people can help you

Shipbuilding is the construction of ships and other floating vessels. It normally takes place in a specialized facility known as a shipyard. Shipbuilders, also called shipwrights, follow a specialized occupation that traces its roots to before recorded history.

theres no map if u dont want me to report incomplete question i suggest u me rn

Explanation:

norsemen from northern countries had made earlier journeys