Complex sentence: Lausatök or Free-Grip is the most aggressive form of armed and unarmed Glima, the name of the Scandinavian martial arts system used by the Vikings over 1,200 years ago.
Split into simpler sentences: Lausatök or Free-Grip is the most aggressive form of armed and unarmed Glima. Glíma is the name of the Scandinavian martial arts system used by the Vikings over 1,200 years ago.