The Wheel is often the first advance a C-evo nation will seek, because it gives an immediate increase in the speed at which advances are discovered as soon as you have built any road on a grassland, plains, prairie, tundra, or even desert tile that is being worked.
It can usually be partly obtained in a technology exchange with the first nation you befriend if you have researched something else such as Alphabet.
The Wheel also has military and movement significance in the advances that it leads to.
| Prerequisite |
| Allows or enables: One additional trade point on every "plain terrain" tile that contains a road|
Has military or other value: Nil
| Further advances|
that require it:
Bridge Building and Invention