B. The new middle class had leisure time and extra money
Answer:
The separation of military and police roles is the principle by which the military and law enforcement perform clearly differentiated duties and do not interfere with each other's areas of discipline. Whereas the military's purpose is to fight wars, law enforcement is meant to enforce domestic law.
Explanation:
The killing of unarmed blacks like mike brown started it ?
To that end, Congress passed the Selective Service Act, which Wilson signed into law on May 18, 1917. The act required all men in the U.S. between the ages of 21 and 30 to register for military service. Within a few months, some 10 million men across the country had registered in response to the military draft.
So it is D
