In deed, America are type "A" people. Think of the personality of people with blood-type "A" you encounted in China, then you will realize why 美国 is 美国 now:
Organized, Sensitive, Superfacial inter-personal skills but actually self-centered and Snobbish, Business-oriented, etc.
Organized, Sensitive, Superfacial inter-personal skills but actually self-centered and Snobbish, Business-oriented, etc.