A stunning new video shows how cities exploded onto the US map over the last 200 years

A new video shows five major cities bursting onto the US map like fireworks over the last 200 years. The video comes from researchers at the University of Colorado Boulder, who used property records to clock where people settled and built from 1810 to 2015. Studying how cities developed over time could serve as a window into patterns of poverty and displacement. It could also teach us how to build smarter to avoid future natural disasters. Visit Business Insider’s homepage for more stories.

It took 200 years or less to develop major US cities like Washington, DC,

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