Question: Where is the tigris and euphrates river valley located?
Disambiguated questions and answers: question: What continent is the tigris and euphrates river valley located?
In which countries is the tigris and euphrates river valley located?
answer: Western Asia
Asia
Iraq and parts of Turkey, Syria, Iran, Saudi Arabia, Kuwait, and Jordan
Natural Questions answer: Western Asia (from the Wikipedia article "Tigris–Euphrates river system")