Multiple choice Which of the following cities belong to the Indus River Vally civilizations? Ur and Mohenjo-Daro Sumer and Harappa Happier and Daro Mohenjo-Daro and Harappa Reveal answer Fill a bubble to check yourself D Correct answer Explanation Mohenjo-Daro and Harappa are the two most prominent and well-studied cities of the Indus River Valley civilization.