第二次世界大战后国际格局经历了从两极格局到多极化趋势的演变。据此请回答: |
(1)二战后两极格局确立的原因有哪些? |
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(2)两极格局中存在着哪些基本矛盾? |
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(3)促使两极格局向多极化趋势演变的原因有哪些? |
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(4)当前国际形势出现和平与动荡并存局面的主要原因是什么? |
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