Question

Why large deltas are created along the Eastern coast?​

Answer 1

Answer:

The sediment is dropped at the mouth of the river. Some rivers drop so much sediment that waves and tides can't carry it all away. It builds up in layers forming a delta. Some deltas are so large that people can live on them.

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HOPE THIS HELPS....................

Answer 2

Answer:

Deltas are wetlands that form as rivers empty their water and sediment into another body of water, such as an ocean, lake, or another river.