Zero

Zero was an invention. Think about it. Did the Romans have a numeral for zero? Nope. Then the Babylonians came along and used zero as a place holder for number like one-hundred. Then about a thousand years later a Indian mathematician named Brahmagupta invented it as an actual number in math. He invented the number before one, zero. He figured out how to use it in basic math. Example:
0 + 1 = 1     0 x 5 = 0     The invention of zero in math changed the world. Imagine how much stuff we wouldn't have with out the simple number zero! I don't want to do an example of how many because I'm too lazy, but that's not the point. That lame number zero, made a huge difference in the way we live. Comment what you think I should write about next.

-Scotty