This topic examines students' ability to extract and understand material information. From the material information of "France withdrew from NATO" and "NATO headquarters moved away", we can see that France no longer follows the United States politically and militarily, and the leading position of the United States has been shaken, so the choice of item C is correct; The topic does not involve economic and political cooperation in western Europe, so items a and b are incorrect; I can't see that France and the United States have become rivals, so item D is incorrect.