A geographic feature does not have a "function" - it was not placed there to do something, it just is.
The continental divide is an area or line on different sides of which rivers will drain into different oceans.
continental drift
The Mississippi River is the geographical feature that divides the eastern and western United States.
The AVERAGE function.
Western part of the United States
The AVERAGE function.
Average Function
average function
Average function
Continental Divide is the drainage that divides sea or ocean. The Great Divide or the Continental Divide of the Americas is the division of the Pacific Ocean watersheds from the Atlantic and Arctic.
Average Function
Average function
The firewall is the metal wall that divides the passenger compartment from the engine compartment