Do you mean the green ring as in the olympic rings? if so, the olympic ring colours are the colours they are because every country in the world has at least one of the coulors in their countries flag.
The reason the colours of the Olympic rings are the way they are is that every country in the world has at least one of the ring colours in their countries flag.
If this question correlates to the rings in the olympic flag then the answer is that no ring represents the US. The rings represents continents rather than countries. The american continents are represented by the red ring.
The linked rings are the olympic symbol because each color of ring represents a color o country must have to participate in the Olympics. The colors are blue, black, yellow, red,& green
The rings can be any dimension.
black stands for ring
the olympic ring colours are black, red, yelow, green and blue
There are 5 rings on the olympic flags resembling 5 continents.