What are the two plates that caused

the boxing Day Tsunamis earthquake

Burma Plate and the Indian Plate

Explanation:

The floor of the Indian Ocean-the Indian plate-is moving north at around 2.5 in. per year, about twice the rate that your fingernails grow. As it moves, it is forced under the Burma plate to its east. Eighteen miles below the surface of the ocean, stresses that had been gradually accumulating forced the Burma plate to snap upward.

Indo-Australian and Sumatra