Last year, the Colorado Department of Transportation counted 95,752 cars on I-25 at U.S. Highway 34 the day of the showdown, about 2,000 cars more than the week before, CDOT spokesman Jared Fiel said.
To make sure that they always had the upper hand, the Chinese invented many simple, yet effective tools of war. The Military inventions of ancient China were the kite, the wheelbarrow, naval mines, land mines, the flamethrower, the early form of mustard gas, the fire lance, paper armor, and the crossbow.
Gunpowder was initially invented in China around the early 9th century AC and spread first to the Middle East and later to Europe by trade routes. Some historians believe that gunpowder was independently invented in Europe, though it's not very likely.