Question

Why are the Appalachian Mountains now located in the middle of the North American plate?

Answer 1

hey here is your answer

it has a short story hope it helps

Africa collided with North America and pushed up the Appalachian Mountains.After the Appalachian orogeny, the mountains that had been pushed up by the Africa-America collision eroded. To the west, the sediments filled up the middle of the North American continent in layer after layer.

hope  it helps