Just England. It is not a river at all but a tidal estuary formed at the confluence of the Ouse and the Trent at Trent Falls, Faxfleet, emptying into the North Sea between Spurnhead and Cleethorpes. The estuaryt forms the border between the East Riding of Yorkshire to the North and East Lincolnshire to the South.
There are several rivers that flow through England, for example the river Thames, the river Humber, the river Severn and allot more.
No ocean flows into any river. The Humber flows into the North Sea
69 countries
China.
china
through middle asia
The River Severn flows through England and Wales.
The Karun River only flows through Iran.
Russia and China
Spain, Portugal.
It flows in Russia.
Wales