Inventiontime: Wheel

Uses: Many, some include moving
Users:  Billions
Who: Unknown

Why: Unknown

You might not think of it as an invention, but, yes, the humble wheel is one.

In its primative form, a wheel is a circular block of hard, sturdy and durable material, usually stone, with a hole bored through the middle. Then, a pole, usually wood, is fitted through the centered hole. When four wheels and two sticks are put together, the poles go through a hole in or attached onto a board, and when they get the wheels to turn, the vehicle moves forward or backward.

Of course, in the stone age, there were no bikes. This is because they wouldn’t be able to get it to balance, but also, they would never think of it anyway.