Why most of the river from distributaries before flowing into sea?

Most rivers do not flow into the sea from distributaries. Distributaries are channels that branch off from the main river and flow away from it. They are typically found in deltas, where the river splits into multiple channels before reaching the sea.

The reason why most rivers do not flow into the sea from distributaries is that deltas are relatively rare features. Deltas are formed when a river carries a large amount of sediment to the sea. This sediment builds up at the mouth of the river, creating a fan-shaped landform. The sediment can also block the main channel of the river, forcing the water to flow through distributaries.

However, not all rivers carry a large amount of sediment. In fact, many rivers carry very little sediment. These rivers are typically found in mountainous areas, where the water flows quickly and does not have time to pick up sediment. As a result, these rivers do not form deltas and they do not flow into the sea from distributaries.

Instead, most rivers flow into the sea through a single channel. This channel is typically called the main channel or the trunk channel. The main channel is the deepest and widest part of the river, and it is the path of least resistance for the water.