I would say alliances and nationalism because nationalism only encouraged countries to go to war and prove that they were the best most powerful country around and in terms of WWI, nationalism led to strong dedication to the army and just keep most countries in the war longer than they should have been in it. Alliances were significant in the exact beginning of the war and the scale to which the war was fought. The many (secret) alliances led to austria-hungary and Serbia to sorta threaten each other, which brought Germany in, then France, etc.
The correct answer would be alternative A) "most of those increases in agriculture are cash crops reserved for export."
The increase of production of crops doesn't benefit the hungry, as the crops are not meant for them. They're destined to exportation. For this reason, the hungry don't get anything from the increase in production.
One of the ways to prevent hunger in developing countries would be to have this crops used for social programs, and distribute food to the hungry. However, that's not the way it's done.
Answer:
The third estate is the answer
