Located in eastern to northeastern North America, which of these mountain ranges formed approximately 480 million years ago?

The Appalachians is a mountain range that extends from eastern to northern North America. Approximately 480 million years ago, during the Ordovician Period, the Appalachians originated; they once reached altitudes comparable to the Alps and the Rocky Mountains before succumbing to natural erosion.

Asked by Vasilii Kulev · Last updated 4 years ago · 1.8M views · SOURCE