A tributary
The Strem River flows in Romania; since it flows it would stand to reason that there must be an up strem river.
A tributary.
A stream or river called that flows into a larger stream or river is called a tributary.
A small river is a tributary to the larger river.
tributary
Tributary
Tributary
I think you mean a tributary. that is a river or stream that flows into a larger river. A strait is a narrow stretch of water that connects two larger bodies of water. :) social studies notes. use them. :) :) :) :)
a river or watercourse forming as the water flows down from the higher elevation. This is often the starting point of rivers and tributaries that continue to flow through valleys and eventually into larger bodies of water like lakes or oceans.
the nile river
tributary
The smaller stream is the tributary of the larger river.