Answer:
the deliberate killing of a large number of people from a particular nation or ethnic group with the aim of destroying that nation or group
Explanation:
It is “they were treated poorly, and work was hard to find.”
<span>When the Soviets blockaded Berlin, </span>USA's response was C. an airlift
So, to find out what IS a cause of the war we need to know M.A.I.N. That means Militarism, alliances, imperialism, and nationalism. That would mean the choices that aren't causes are totalitarianism, defense, and industrialism.