A tributary I'm pretty sure..
The tributary flowed mostly into the delta, not the main channel of the river. The Missouri River is the longest tributary of the Mississippi river.
because it is the same as any other tributary
because it is the same as any other tributary
I believe the word you want is delta. A delta is a low, watery land formed at the mouth of a river. It is formed from the silt, sand and small rocks that flow downstream in the river and are deposited in the delta. A delta is often (but not always) shaped like a triangle (hence its name, delta, a Greek letter that is shaped like a triangle).
Tributary
they both have to do with rivers and water.
The Mississippi is in USA, North America. With its tributary, the Missouri, it forms the 3rd longest river in the world. It has a delta in the Gulf of Mexico.
Mountains valleys Mesa rivers lakes deserts delta island tributary peninsula canyons hills
Because a tributary flows into a river. If a tributary flowed directly into the sea - it would be a river - not a tributary !
a tributary is a stream
It is called a tributary