Ganga Brahmaputra Delta is fastest growing delta why?

Question

INDIAN RIVERS GANGA AND BRAHMAPUTRA DETLA

Answer 1

The Ganges-Brahmaputra Delta forms about half the area of the nation of Bangladesh; a third of the delta, West Bengal, lies within India. This tropical delta is subject to the same influences that made the deltas of the Mississippi or Nile. Recent borehole dating has revealed the youth of this complex chunk of active wetland. Most Bengal delta layers were laid down during ten post-glacial millennia; change continues as the rivers rapidly transport an immense load of sediment to the sea: about 2.5 gigatons per year, the weight of the Rock of Gibraltar passing by each year or two. Despite the continual addition of sediment, the surface of the delta remains close to sea level as its base slowly subsides.