Which river merges with the Ganges to form the world's largest delta?

The Brahmaputra River merges with the Ganges River at a point near the Bay of Bengal, contributing significantly to the formation of the Sundarbans, which is the largest delta in the world. This delta is the result of sediment deposition from both rivers, creating an extensive network of waterways, islands, and mangrove forests. The confluence of these two major rivers not only shapes the geography of the region but also plays a crucial role in the ecosystem and local livelihoods.

The other rivers listed, such as the Yangtze, Mekong, and Irrawaddy, are significant in their own right but do not contribute to the Ganges delta. The Yangtze flows through China, while the Mekong primarily runs through Southeast Asia, and the Irrawaddy flows through Myanmar. None of these rivers merge with the Ganges, thus they do not contribute to the formation of the Sundarbans delta.