The Salween River, also known as the Thanlwin River, is a major river in Southeast Asia. It flows through China, Myanmar (Burma), and Thailand, covering a distance of approximately 2,815 kilometers (1,749 miles). The river originates in the Tibetan Plateau of China and then travels southward, forming the border between China and Myanmar for a significant stretch before entering Myanmar. In Myanmar, the Salween flows through rugged and mountainous terrain, carving deep gorges and valleys.

The Salween River is known for its diverse ecosystems and plays a crucial role in supporting the livelihoods of the people living along its banks. It provides water for irrigation, sustains fisheries, and supports transportation and trade. The river is also home to various species of flora and fauna, including several endangered species.

The Salween River has historical and cultural significance as well. It has been a vital trade route and a source of interaction among different communities and civilizations in the region. The river has also witnessed various historical events and has been a subject of importance in political and environmental discussions.

Therefore, if the river shown on the map is identified as the Salween, it is referring to this significant river that flows through China, Myanmar, and Thailand, contributing to the region`s ecosystems, economies, and cultural heritage.