Braathens airline belong to which Country?

The correct answer is Swedon as reference to wikipedia and centreforaviation.com. The following paragraphy is an excerpt from centreforaviation website.

Braathens Regional was a Swedish regional airline based at Trollhättan-Vänersborg Airport, with additional bases at Stockholm-Bromma and Ängelholm-Helsingborg airports. The airline offered low-fare services from Stockholm-Bromma to destinations across southern Sweden. The airline was part of the Thun Group, which has interests across the shipping, real estate management and aviation industries. As part of a consolidation programme by Braathens Aviation, parent company of Braathens Regional, the carrier merged with Malmö Aviation and Sundsvallsflyg to form a new Swedish airline, BRA – Braathens Regional Airlines.