Technically Oklahoma is also true for “borders Texas but not Oklahoma”. Because Oklahoma doesn’t really border itself, right? Kind of weird to think about.
I'm French, I know there is no H but I thought Arbor Day had to do something with pilgrims so I tried every New England state. I did get Nebraska eventually by randomly trying other states...
I thought of auto racing for the quarter million fans question and tried Alabama (Talladega) and Florida (Daytona), then started thinking of states like Massachusetts and New York with large marathons. Didn't get the right answer :(
Boston, Chicago and NYC marathons all get more than 250k spectators annually.