If a firework explodes in the middle of a street dividing two cities, and one of the cities has a law that bans fireworks, is it illegal? Yes, because blowing up fireworks in the middle of a major street is against the law all over the U.S.! Other random thoughts include: do mailmen in Europe sit on the driver’s left? How many countries are in the world? What is the farthest point anybody could possibly see (with a telescope, binoculars, etc.)?