Below you can find the This capital on the tigris river was founded in the 8th century by caliph al-mansur Jeopardy Words Answer. The answer to This capital on the tigris river was founded in the 8th century by caliph al-mansur has 7 letters. This clue belongs to the World capitals category and is part of Jeopardy Word Level 2380. If you scroll near the bottom you will find other clues and answers part of level 2380