Watch America Transform Over the Past 170 Years in One Mesmorizing GIF

This mesmerizing GIF shows the growth of America and the expansion that created the 50 states we have today.

The map shows the many changes from March 4, 1789, when the U.S. Constitution took effect, to August 21, 1959, when Congress admitted Hawaii as the 50th state.

 

US Map GIF

 

via Imgur/Reddit MapPorn