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2
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this river formed the Grand Canyon
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4
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these are part of the Appalachian Mountain Range
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5
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are a high rugged mountain range in the western United States
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6
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this river forms a natural boundary between Texas and Mexico
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7
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this river begins in Minnesota and flows to the Gulf of Mexico
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8
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The Mississippi River flows south and empties into this body of water
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9
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the largest lakes in our country located in the Northern United States
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10
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this is the longest river in the United States
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11
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this river runs through New York and empties into the Atlantic Ocean
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