Multiple choice There are three theories why the Indus civilization disappear, name them. Earth quakes, war, and genocide Earthquakes, disaster, and starvation disaster, conquered, and earthquake Starvation, genocide, and war Reveal answer Fill a bubble to check yourself C Correct answer Explanation The three most widely discussed historical theories for the collapse of the Indus Valley Civilization are natural disasters (like floods or climate change), being conquered by outside forces, and tectonic activity such as earthquakes.