Idaho's official nickname is the "Gem State" because of the abundance of natural resources and scenic areas in Idaho. The mountains of Idaho contain veins of gold, silver, lead, zinc, cobalt, copper, and many other rare minerals.
They only require one.
The state of Texas requires that you have 2 plates. One in front and one in the rear.
In the state of Texas, drivers are required to have 2 license plates displayed on the car. One license plate should be in the front and the other plate must be displayed in the rear.
There are 120 different license plates available!
IIRC, the state of Ohio requires two number plates to be displayed.
1 or 2
The 2017 Illinois license plates were manufactured at the Illinois Department of Corrections' prison facility in Vandalia. This location has been responsible for producing license plates for the state for many years. The facility employs inmates to work on the production of these plates, contributing to rehabilitation efforts through vocational training.
Idaho is one state.
Two
Two plates were required for automobiles and for trucks. I have a 49 F 1 Pickup that has the original license plates on it.
2 plates on tractor 1 plate on trailer