Most people assume islands belong entirely to a single country, but world history has drawn some of the strangest political dividing lines straight across isolated landmasses and ocean channels. From a Scandinavian rocky islet sliced down the middle to an Arctic island whose border was settled with bottles of whiskey, geographic frontiers get bizarre when water is involved. Step into the Island Frontiers Challenge: tackle 10 brand-new island border questions, beat the 15-second countdown to stack speed bonuses, and see if you can claim the Tier 1 Maritime Diplomat rank!