Giovanni Fontanna, an Italian engineer built a human powered device in 1418. It had four wheels and a loop of rope connected by gears.
The first bicycle was invented by German Baron Karl von Drais, it was called Draisienne. It didn't have pedals, the rider had to sit on the frame and push the bike ahead using his legs.He introduced it to public in Mannhein in 1817.
A Scottish Blacksmith Kirkpatcik is believed to have invented the first mechanically propelled bicycle in 1839, this claim is disputed.
Pierre Michaux, a Frenchman was the first person to add mechanical crank drive with pedal on a bicycle. His cycle had enlarged front wheels, It was first mass produced bicycle.
The Stock market crash of 1929 was indeed the cause of the Depression, as the market crash put Wall Street in panic. Millions of the Stock investors lose it all. The lack of confidence in the situation ceased consumer spending; this resulted in massive layoffs of workers.
