First World vs 3rd World Sources

http://hdr.undp.org/
https://www.npr.org/sections/goatsandsoda/2015/01/04/372684438/if-you-shouldnt-call-it-the-third-world-what-should-you-call-it
https://www.npr.org/sections/goatsandsoda/2015/01/04/372684438/if-you-shouldnt-call-it-the-third-world-what-should-you-call-it
https://www.state.gov/documents/organization/228196.pdf
http://worldpopulationreview.com/world-cities/delhi-population/
http://hdr.undp.org/en/composite/Dashboard2
https://en.wikipedia.org/wiki/Poverty_in_India
https://en.wikipedia.org/wiki/Central_African_Republic
http://www.leeabbamonte.com/africa/central-african-republic.html
http://strategyleader.org/profiles/!kung.html
https://en.wikipedia.org/wiki/%C7%83Kung_people
https://en.wikipedia.org/wiki/Developed_country