What are the giant concrete arrows used for?
Correct answer: They guided the air mail pilots in the early 1920s
Anna J
I never knew that; but it was ingenious at the time.
poopy pants
a bit of an American centric question, better so say 'in America, what...'
Glendar
That's really neat! I'm an airplane nut and didn't know this one. Cool, I love this game!