69 countries
China.
china
through middle asia
The River Severn flows through England and Wales.
The Karun River only flows through Iran.
Spain, Portugal.
It flows in Russia.
Wales
It runs through China.
The Tigris River flows through Turkey, Iraq, and joins the Euphrates River in southern Iraq to form the Shatt al-Arab River that empties into the Persian Gulf.
The River Nene flows through the UK only, specifically England.