The answer to this question is A
I would choose the letter A because I read that answer somewhere so it's Federal Reserve
World War II was the deadliest military conflict in history in terms of total dead, with some 75 million people casualties including military and civilians, or around 3% of the world's population at the time. Many civilians died because of deliberate genocide, massacres, mass-bombings, disease, and starvation.
The Great Dust Bowl
Ku Klux Klan
Prejudice
Prohibition
