Question

What is a delta? Which is the largest delta in the world?

Answer 1

A delta is formed at the mouth of a river where the river flows into an ocean, estuary or lake. The river carrying sediments deposits them at its mouth; this leads to the formation of deltas. These deltas are triangular structures with high fertility.

The ​Ganges–Brahmaputra Delta or commonly referred to as Sunderban delta is the world's largest delta.