Alaska has the most total water area while Michigan has the largest percentage of water area.

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The surface of the earth is covered by water for the most part. However, there are countries on many of the earth's landmasses. The percentage of countries that have mountains in them is approximately 30 percent.

GCA stands for General Currency Area. The list of GCA countries is all countries, excluding some rupee currency countries.

All countries other than Nepal, Bhutan and former USSR fall under General Currency Area.