When was the jetpack invented? When was England founded? When was the McDonald's invented? When were musical instrument invented? When was the didgeridoo invented? When was the propeller invented? When was the airport invented? When did boxing originate?
When did boxing originate? When was the potato chip invented? When was the electric lamp invented? When was the surfboard invented? When did Dionysius invent the catapult? When was the first airplane invented? When was the scooter invented? When was the lightbulb invented? When was the satellit...
When did boxing originate? When was the first gun invented? When was Gatorade invented? When was three-field crop rotation invented? When were the first video games invented? When was the first commercial airplane invented? When was the first passenger airplane invented? When was poker invented?
When did boxing originate? When was the first gun invented? When were roller skates invented? When was the sandwich invented? When was the space rocket invented? When were rockets invented? When was the CD player invented? When was the beeper invented? When was the rifle invented? When was...