They controlled people through fear of their gods of their religion. Also they had access to plenty of gold which was valuable at the time.
The correct answer would be the Espionage Act of 1917.
The Supreme Court decided, unanimously mind you, that the Espionage Act of 1917 was constitutional and that the defendants who took upon themselves to distribute flyers about resisting induction to the men who are of age to be drafted can be convicted of obstructing the draft.