Where is the question so I can answer
Since they realize there is a tsunami there have an emergency plan, emergency equipment and might have escaped.
Answer:
Criteron validity is the correct answer.
Explanation:
The main reason for migration is mostly food: people migrate where they can produce food easily, catch it, or in modern times, to produce money to buy food.
Other reasons is conflict with other people and competition for food: people migrate in the hope that elsewhere they won't have to compete.
Finally, people might also migrate to look for a better climate (where they don't have to built very cold resistible houses for example).
Politics which is a term that comes from a Grecian word, "Politika" (affairs of cities), is a process wherein making decisions will apply to the members of the group. It also refers to exercise or achieve a certain position in a government that will organized or control over a community specifically a state.