Answer:
OPEC can be observed as a trade barrier because it could hypothetically completely exclude a country from trading with countries that produce oil and this would make life much harder for those countries. For example, OPEC introduced an embargo on the US in 70s and there was a huge spike in gas prices and a shortage of fuel.
Explanation:
It is b i think the ellis island
Answer:
because the the crew on board flight 11 notified the ground control which notified the FBI (federal bureau of investigation)
Explanation:
The answer is A. Cold War