4 ms·
http://worldpopulationhistory.org/map/1800/mercator/1/0/25/ http://worldpopulationhistory.org/map/1800/mercator/1/0/25/ It's apparently not cities with 1 milli
by aaron-lebo 10y ago
http://worldpopulationhistory.org/map/1800/mercator/1/0/25/ http://worldpopulationhistory.org/map/1800/mercator/1/0/25/
It's apparently not cities with 1 million people, it's population centers of 1 million.