a large tsunami triggered by the earthquake spread outward from off the Sumatran coast on 26 December 2004. The worst part of it washed away whole cities in Indonesia, but every country on the shore of the Indian Ocean was also affected. In Indonesia, some 240,000 people died from the quake and tsunami combined. About 47,000 more people died, from Thailand to Tanzania, when the tsunami struck without warning during the next few hours.the 2004 tsunami í the deadliest in recorded hítory