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In the footsteps of Lewis & Clark, US population growth

On this day in 1804, two Virginian explorers set out on a journey west in what would become the legendary Lewis and Clark Expedition. And in their footsteps, we can follow America’s expansion west.

Back in 1800 before the epic trip, the US population was 5.3 million. Ten years later, it increased to 7.2 million — a 36 percent increase. As shown in the following maps, this growth continued, and started moving west, adding territories and states along the way.


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  1. […] Social Explorer and Oxford University Press took a trip through the American West 200 years ago. ┬áSee the blog post here and on Oxford’s website. […]

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