Wow, been pretty busy since I last checked in.
The question was sincere, so I think you were needlessly rude & confrontational Kimon07 but I do genuinely appreciate the obvious effort that you have put in with links etc. I knew a decent chunk of that stuff but I have learned things too.
I'm afraid I don't have your work ethic so I won't be supplying links to the contributions of ancient China, India, the Mayans or the Arabs but if you look into it I'm sure you'll agree that they did a few things too.
I guess as other posters have pointed out this boils down the distinction between ancient & modern Greece. It seems the moderns really are dining out on tales of greatness that they perhaps should share more widely as the geography was somewhat different.
It also begs the question 'what went wrong?' as not much of note seems to have come out of Greece since the time of Christ (give or take a couple of centuries).