Alternate American map

Speaking of American maps, I recently found this nice map that shows how the map of North America would have looked if there had been many more independent countries. Not just the CSA and Texas, but also places like California, Five Nations and Vermont.

I like it. Somehow it makes it look more like Europe, no?

I do wonder, though, whether the USA in such a scenario would have had that many more inhabitants than the other countries. Wouldn’t many of them have been better at attracting immigrants on their own, and wouldn’t the US have been less popular?