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The War of Independence (1775–1783) ends, and the U.S. acquires the first 13 colonies in the east by the Treaty of Paris that establishes the first U.S. boundaries
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The Louisiana Purchase of land from France extends US lands from the Mississippi River to the Rocky Mountains between the Canadian border and the Gulf of Mexico
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The Lewis and Clark Expedition explores and map the US lands bought in the 1803 Louisiana Purchase
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The invention of steam engines result in steamboats appearing on western rivers
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The towns and cities increased and methods of transport included the stagecoach