Third World...

In the forum below, you’ll find a thread on the expression « Third world country ».
See the last three posts at the bottom of this page one. You’ll find examples of the use of that expression.
http://www.englishforums.com/English/ThirdWorldCountry/hbmjm/post.htm

Here, you can read the article by Alfred Sauvy, written in 1952. This is where he uses, for the first time, both expressions : « Troisième monde » and « Tiers Monde. »

http://www.homme-moderne.org/societe/demo/sauvy/3mondes.html

And here, you can read more about him

http://fr.wikipedia.org/wiki/Alfred_Sauvy
http://www.bibliomonde.net/auteur/alfred-sauvy-2251.html