Which type of boundary is drawn along a prominent physical landscape feature, such as a river, mountain range, or desert?

💡 Explanation:

A physiographic boundary, also known as a natural boundary, uses features of the natural landscape like rivers, mountains, or deserts to define a border between political entities. Geometric boundaries are typically straight lines, subsequent boundaries evolve with the cultural landscape, and relict boundaries are former borders that no longer function but still leave a cultural imprint.