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2
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a break in the Appalachian Mountains.
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3
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two people that went on an expedition to gather information about the new land west that at the end, inspired people to move westward.
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4
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an official count or survey of a population.
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5
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an invention that revolutionized river travel by making it cheaper and faster.
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6
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an explorer and pioneer that helped make the original trial easier to cross for other pioneers going west.
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7
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an expressway, especially one on which a toll is charged.
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8
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built the Clermont for Robert Livingston.
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9
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an enclosed chamber in a canal that worked like an escalator, raising or lowering vessels from one level to another by admitting or releasing water.
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1
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an artificial waterway for navigation, irrigation, etc.
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2
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an enormous plot of land that Jefferson bought from Napoleon for $15 million, expanding the nations borders westward.
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