It's about relatability, these stats just show how is population of these areas relatable to Americans. Not surprisingly rich Europeans are the most relatable,

It's about relatability, these stats just show how is population of these areas relatable to Americans. Not surprisingly rich Europeans are the most relatable, followed by poor S and C America, but still mostly same race and cultural background and then there is big nothing with vast cultural gap, different race etc. with Asia and Africa. I just don't understand Pacific, especially if it includes AU/NZ they should be just next to Europe, but maybe nothing really happening in AU/NZ besides ocasional earthquake and the news are overshadowed by less interesting unknown countries.