Changes

== Wheel ==

== Wheel ==

The wheel was a revolutionary invention by the [[Mesopotamia|Mesopotamians]]. It allowed low [[friction]] in movement by rolling. This makes it ideal for transportation applications in which is it generally important to waste as little [[energy]] as possible.  

The wheel was a revolutionary invention by the [[Mesopotamia|Mesopotamians]]. It reduced [[friction]] in movement by rolling. The wheel is ideal for transportation applications where it is generally important to waste as little [[energy]] as possible.

== History ==

== History ==