Alerts from the national terrorism advisory system apply only to the united states and its possessions. (introduction to antiterrorism, page 12) true or false

That statement is True.

Explanation:

The National Terrorism Advisory System Was created by President Josh W Bush in 2002 following the terrorist attack that occurred on 9 September 2001.  

During its introduction, the purpose of the alerts was to give emergency warning for the citizens of united states in case there is a terrorist attack in their territory. This system is applicable and operated only by the national defense department in united States. Every other countries have their own system in handling terrorism.