Name the delta formed by the Ganga and Brahmaputra rivers.
Sundarbans delta is formed by the Ganga and Brahmaputra rivers.
Ganges-Brahmaputra Delta
The Ganges-Brahmaputra Delta (also known as the Brahmaputra Delta, the Sundarbans Delta or the Bengal Delta) is a river delta in the Bengal region of the Indian subcontinent. The name Sundarbans is thought to be derived from sundry or Sundari (Heritiera fomes), the name of the large mangrove trees most plentiful in the area.