Super interesting quizzes. It’s cool to see the differences between two and three million! You could also do the most recent states to hit certain milestones since you’ve got lots of stats in your charts already.
This is the first states to reach a milestone. Most recent states (or last states) would be much harder. Other milestones… hmmm… first states with a city over a million? That seems difficult to make but would be an awesome quiz. First states over a billion GDP? First states to a million automobiles (maybe too hard to get data on that one). First states with international airports? You’re right, it’s hard to come up with easy-to-research topics using this premise. The GDP one is gold, though. I could see it getting featured!
I see. I have a couple in mind but.......GDP has been hard to find. There are like 10 cities over a million so that wouldn't be much different. Thanks for the ideas!