What do the numbers on the yellow lines mean on the surface area map?

Stone mountain was formed during the formation of the blue ridge mountains around 300-350 million years ago and is considered part of the appalachian mountains. it formed as a result of the upwelling of magma from within the earth's crust. this upwelling, or solidified to form the that became stone mountain.

What could the united states of america do to improve their status? name at least 3(ap human geography)

Which of the following is an example of relocation diffusion