Answer:
Alerts from the national terrorism advisory system apply only to the united states and its possessions is true.
Explanation:
- "National terrorism advisory system" (NTAS) is a scale that is used by the US government to rate the terrorism threat since 2011.
- NTAS is formulated in replacement of 'Homeland security advisory system'.
- In 'homeland security advisory system' (HSAS) there were four levels slow, guarded, elevated, high, and severe.
- USA had attack in September 11, 2001 and about 3000 people were died.
- After the attack the government of USA formulated HSAS and NTAS was officially imposed from January 27, 2011 by ending the old HSAS.
