Which famous North American mountain range separates the eastern Coastal Plain from the Interior Lowlands?

The Appalachian Mountains are the famous North American mountain range that acts as a natural barrier between the eastern Coastal Plain and the Interior Lowlands. This range extends from Newfoundland in Canada down to Alabama in the United States and consists of various peaks and valleys. Its formation dates back to the Paleozoic Era, and it plays a crucial role in influencing the climate and ecology of the regions it separates.

The location of the Appalachians is significant because they contribute to the geographical and cultural divisions within North America. The Coastal Plain to the east is characterized by flat terrains and proximity to the Atlantic Ocean, while the Interior Lowlands to the west feature rolling hills and fertile plains. The Appalachian Mountains thus serve as a significant landmark in understanding the geography of the continent.

In contrast, the Rocky Mountains are much younger, located further west, and do not separate the same regions described in the question. The Alaska Range pertains specifically to Alaska and does not interact with the interior regions of North America in the same manner. The Great Dividing Range is actually found in Australia, unrelated to North America's landscape.