What mountain range runs along the eastern United States?

The Appalachian Mountains are the mountain range that runs along the eastern United States. Stretching approximately 1,500 miles from Canada down through the eastern U.S. to northern Alabama, they form the backbone of the eastern region. This range is known for its diverse ecosystems, rich history, and significant role in the development of the United States, serving as a natural barrier for early settlers and influencing migration patterns.

In contrast, the Rocky Mountains are primarily located in the western United States, while the Sierra Nevada and Cascade Range are also western ranges; both are situated in California and the Pacific Northwest, respectively. The geographical locations of these other mountain ranges do not extend into the eastern United States, making them unsuitable as answers to the question regarding the eastern mountain range. The choice of the Appalachian Mountains highlights the distinct geographical divisions of the United States and the specific location of significant landforms.