The drivetrain on a vehicle transmits the power from the engine, all the way to the wheels.
If we only went in a straight line, this would be an easy task. But when a vehicle is turning, the wheels rotate at different speeds.
The inside wheel turns slower because it is essentially traveling in a smaller circle, whereas the outer wheel is traveling in a larger circle so it must turn faster to cover the increased distance.
So, the drivetrain needs to incorporate a component that will allow the wheels to rotate at different speeds when required. That component is the differential.
This video is sponsored by The Pronto Network.