Surprised at some of the low numbers - especially for Fort Sumter and the 1st Continental Congress. Perhaps a lot of those numbers are people not in the US...
I got the Continental Congress one wrong because, although I knew the Continental Congress was in Philadelphia, I was thrown by the mention "first" and by the date. I thought it might be a trick question, and there might have been a second, more famous Continental Congress, that later moved to Philadelphia.
Also, not everyone on this page is from the US. A lot of these events are a looooot less relevant to other parts of the world!
Driving east on I-70 toward Truckee there's a sign telling you that the Donner Family Picnic Area is coming up. I always think of finger food as I pass it.
If you visit Harpers Ferry on the border of WV and Maryland, they consider that the actual starting point for the Lewis and Clark expedition. They make a big point of it being where the expedition started and got all their supplies for the trip, so Maryland could be an alternative answer.
Also, not everyone on this page is from the US. A lot of these events are a looooot less relevant to other parts of the world!