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U.S. Cities (0)
Country boundary, international border and coastline, for the United States (1)
Internal state boundaries of the United States (2)
U.S. National Transportation Atlas Interstate Highways (3)
U.S. Rivers (Generalized) (4)
U.S. States (Generalized) (5)
Countries/islands neighboring the US (6)
U.S. Lakes (Generalized) (7)
U.S. Counties (Generalized) (8)
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