It’s A - The Nuremberg Laws
Answer: The Europeans used this tactic so they can get their way. The different countries needed to grow a strong and mighty empires. Columbus committed genocide and mass murder to get the land the Native Americans had in the Caribbean. These were ways Europeans used as great ways to grow their empires. They had to justify their reasons for this cause.
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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.
Answer:
Germany lacked the resources required to make the weapons needed.
For example: Germany lacked the necessary raw materials to make cordite (the vital propellant for bullets and shells) and explosives.