Division of political power among branches of government. I think this is correct
The answer you are looking for is going to be the central intelligence agency, or the CIA for short.
the CIA solves only the most difficult cases that the federal bureau of investigation (FBI) cannot solve. the CIA also researches info on alien existance, and does anything that the President requires, such as hunting down anyone who attemps to assassinate the president and fails. the CIA very rarely fails,nor is shown on the news, and the agents identitys are hidden from the public.
I hope this helps, and have a nice day.
In expansionism, governments and states expand their territory, power, wealth or influence through economic growth, soft power, military empire-building or colonialism.
"Roaring" since the times were known as the "Roaring Twenties" since we were in a period of massive economic growth and stability