Three measures that have been taken since the christmas day tsunami and how these steps directly relate to the causes of the diaster?

Here are some of the ways they can prevent them:

hold prepare an emergency plan during this emergency, plan and have improved the emergency service's responds ability's after this type of natrual disasters.

early warnings of a possible tsunami wave and good public communication is the best.

way to minimize loss of life. To build sea-defense strong enough strong enough and tall.

Since they realize there is a tsunami there have an emergency plan, emergency equipment and might have escaped.