War is, no doubt, an extremely complicated social phenomenon, and many scholars have investigated the problem of the causes of war since the days of Thucydides si Text and ref.
毫无疑问，战争是一种极其复杂的社会现象。引发战争的原因是什么？
War is, no doubt, an extremely complicated social phenomenon, and many scholars have investigated the problem of the causes of war since the days of Thucydides si Text and ref.
毫无疑问，战争是一种极其复杂的社会现象。引发战争的原因是什么？
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