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
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. :) :) :) :)
Tributary
The smaller stream is the tributary of the larger river.
tributary
the nile river
Tributary- Small river that flows into a larger river or stream;a branch of the river Hope this helps ^^