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Birth Of America

The shape of the North American continent has changed radically over millions of years. During the great Ice Age, glaciers carved out the Great Lakes; as the Earth's temperature rose, they filled with glacier melt. The Great Salt Lake is just a shadow of its former self. And as tectonic plates continue to move, America moves closer to Europe each year.

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  • Originally Aired March 6, 2008
  • Runtime 60 minutes
  • Content Rating United States of America TV-G
  • Network National Geographic
  • Created July 2, 2014 by
    Administrator admin
  • Modified July 2, 2014 by
    Administrator admin