It is probably an African country. Some of those countries are so densely populated with diversity that it is almost impossible to build a state without causing extreme ethnic conflict. Chad, for instance, has over 200 distinct ethnicities.
This link is a crude source for ethnicities by country:
http://www.infoplease.com/ipa/A0855617.html
ethnicity has nothing to do with muscle mass
Netherlands
barretts oesophagus is most common in white ethnicity. it is much less common in black, Asian ethnicity.
It is Spanish.
"Afro" "Asian" is not a country it is a gneral ethnicity/cultural description.
Italy
Spanish
The surname Payne is a variant of the name Pains. It is most popular in Ireland, but is also found in England.
Predominantly German origins
I believe it is armenian.
Uruguay (88%)
Italian