<span>Nationalism led to arrogance among the citizens of various nations by promoting a sense that people of a particular country were superior to those of other nations and by giving people the impression that they could win any war thanks to their togetherness. Other factors that contributed to causing World War I include imperialism and militarism.</span>
Answer: um is there options ? Or do you need to write a paragraph?
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In order to control their large empire, the Romans developed important ideas about law and government. They developed the best army in the world at that time, and ruled by force. They had fine engineering, and built roads, cities, and outstanding buildings.
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