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  1. ...: 193 sovereign nations, 61 dependent areas, and 6 disputed territories .」 也就是全世界有195個主權國家,61個非獨立區域,6個有爭端區域。

  2. ... in 1846 ended the Oregon boundary dispute , extending the border westward along the 49th parallel...change of Canada's provinces and territories since ConfederationFollowing several constitutional...