Which of the following countries uses a mountain range as both a natural boundary as well as a political boundary?

The correct response reflects the fact that the Pyrenees mountain range serves as both a natural and political boundary between France and Spain. This mountainous region runs along the entire border between the two countries, creating a natural barrier that has historically contributed to cultural and political divisions. Mountains like the Pyrenees not only affect the geography but also influence the climate, ecosystems, and even human activities like settlement patterns and economic interactions.

The other options don’t exhibit the same distinct use of natural mountainous features to define political boundaries. For instance, while the United States and Canada share a vast border, the primary separation is not defined solely by mountain ranges. In the case of China and Mongolia, although geographical features exist, the boundary is not strictly a mountain range. The border between Somalia and Kenya is more defined by historical treaties and colonial legacies than by natural features. Thus, the choice of France and Spain highlights the interplay of geography and diplomacy in establishing clear national boundaries through natural formations.