The mountain range that separates Europe from Asia is the Urals.

Explanation:

The Urals are a mountain range that stretches over 2,500 kilometers from the Arctic Ocean to the Ural River in Russia. They are considered to be the boundary between Europe and Asia. Here's why:

1. Location:
The Urals are located in Russia and extend from the north to the south. They divide the European and Asian continents. On the eastern side of the Urals lies Siberia, which is part of Asia, while on the western side lies the European part of Russia.

2. Historical Significance:
The Urals have been traditionally recognized as the border between Europe and Asia due to their geographical location. This division dates back to the 18th century when the Russian Empire expanded its territories towards the east.

3. Cultural and Political Differences:
Europe and Asia have distinct cultural and political differences. The Urals act as a natural barrier that separates these two regions, contributing to the differentiation in history, language, religion, and governance.

4. Geographical Features:
The Urals have unique geological and geographical features that make them a significant landmark. They consist of low-lying mountains, plateaus, and plains, providing a clear distinction between the European and Asian landscapes.

5. Symbolic Importance:
The Urals have gained symbolic importance as the boundary between Europe and Asia. They represent a physical and symbolic division between two continents with different cultural, economic, and political characteristics.

In conclusion, the Urals mountain range acts as the natural boundary separating Europe from Asia. Its geographical location, historical significance, cultural differences, and unique features make it the accepted dividing line between these two continents.