Animated Map - Showing population growth, state formation and boundary changes in the United States, 1790-2010. Available online at r.geocompx.org.

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Animated map showing population growth, state formation and boundary changes in the United States, 1790-2010. Animated version available online at r.geocompx.org.
https://geocompr.robinlovelace.net/adv-map.html#animated-maps 

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