In "The Deadliest Tsunami in History," the cause of the Indian Ocean tsunami was

Answer 1

the result of a massive undersea earthquake. Specifically, on December 26, 2004, a magnitude 9.1 earthquake occurred off the west coast of northern Sumatra in Indonesia. This earthquake was caused by the movement of the India plate sliding beneath the Burma plate, resulting in a rupture that released an enormous amount of energy. The energy released from the earthquake caused the ocean floor to uplift, displacing a massive amount of water and triggering the formation of a tsunami.