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How the landscapes of America's three great mountain ranges - the Appalachians, the Rockies and the Sierra Nevada - challenged the westward push of the early pioneers.
First Air Date : May 08, 2016
Last Air date : May 22, 2016
Episode : 3 Episode
Season : 1 Season
Runtime: 26:14 minutes
Studio: BBC Four
Country: United Kingdom
Cast: Ray Mears
