How has the two world wars, The Cold War and the Computer Revolution reduced the global economic clout of the Western European Atlantic powers and the U.S.
Oh, my goodness. Is this a final-exam question? And you expect someone to do it for you?
HOWEVER ... If you try writing up your thoughts, or even an outline of your thoughts, someone here will be happy to go over it for you and make suggestions/corrections.
Please post what YOU THINK.