Which mountain range separates Europe from Asia?

The Ural Mountains are significant because they serve as a natural boundary separating Europe and Asia. This mountain range extends approximately 2,500 kilometers (1,600 miles) from the Arctic Ocean in the north to the Ural River and Caspian Sea in the south. The geographical significance of the Urals lies in their role in delineating the two continents, as they represent a clear dividing line based on both geographical and cultural differences.

The other mountain ranges mentioned do not serve this geographical function. The Andes are the longest mountain range in the world, located in South America, while the Rocky Mountains are found in North America. The Himalayas are situated in Asia and are known for being the highest mountain range in the world, but they do not play a role in separating Europe and Asia. Thus, the Ural Mountains are the correct answer due to their established role in continental demarcation.