pansubcontinental
Pansubcontinental is an adjective used to describe something that spans or encompasses an entire subcontinent. A subcontinent is a large, relatively distinct landmass that is geographically part of a continent but is often considered a separate entity due to its size, geological distinctiveness, or cultural and political separation. The most widely recognized subcontinent is the Indian subcontinent, which includes countries like India, Pakistan, Bangladesh, Nepal, Bhutan, and Sri Lanka. Therefore, a pansubcontinental phenomenon or characteristic would be one that is prevalent across all or most of these nations.
The term can be applied to various contexts, such as pansubcontinental trade routes, pansubcontinental cultural exchanges,