who are major contributors of realism?
World War II
Yes, NATO is currently still in existence. The Warsaw Pact disbanded in 1991. Many former Warsaw Pact allies are current NATO members.
It caused money to become less valuable, making goods difficult to buy.
Fascism's commitment to nationalism led many Germans to believe that Jews had no place in German society.
The fascist governments of the time did not actively contribute to the Holocaust, though Italy did surrender many of its Jews, it was not proactive in the way that Germany and the Nazis were. You could say that the philosophy of united society and the elimination of those not seen as conforming to that society could contribute. But it would be a mistake to try to align Nazism with fascism.
Both believed that anyone who questioned the government should be harshly punished.
the systematic mistreatment of jewish people
The complete indoctrination of students and workers into Joseph Stalin's political ideology
Jingoism