Came across this amazing site on Larry Ferlazzo’s blog, and just had to share! Michael Porath has created a project that visually details the history of our nation’s geographical growth as shown through 141 individual maps:

Each of the maps has an overview and highlights the changes since the last map visually, as shown below.

You can easily move from one map to the other and watch as America grows and grows. Check it out in full here, and happy mapping!

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