Decolonisation and nationalism topic is often used as a theme for studying world history since World War I. Hope this helps!
Conflict, while often avoided, is not necessarily bad. In fact, conflict can be good for organizations because it encourages open-mindedness and helps avoid the tendency toward group think that many organizations fall prey to.
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The Japanese attack had several major aims. First, it intended to destroy important American fleet units, thereby preventing the Pacific Fleet from interfering with Japanese conquest of the Dutch East Indies and Malaya and to enable Japan to conquer Southeast Asia without interference.