Third World

collective name for developing nations that are characterized by poor infrastructure and widespread poverty

Third World is a term used along with First World and (to a much lesser extent) Second World to divide the nations of Earth into three broad socio-political and economic categories. The term was coined in 1952 by French demographer Alfred Sauvy to refer to what are now called developing or underdeveloped countries, especially in Latin America, Africa, Oceania, and Asia, which were not aligned with either the Soviet nor American blocs during the Cold War. Today, however, the term is synonymous with all countries in the developing world, independent of their political status.
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Noun
1. underdeveloped and developing countries of Asia and Africa and Latin America collectively
(hypernym) collection, aggregation, accumulation, assemblage

Yetsirah (Hebrew) [from the verbal root yatsar to form, fashion] Also Yetzirah, Jesirah, Jetzirah. 'Olam hay-yetsirah is the sphere of formation, the third of the four worlds or 'olam of the Qabbalah. It is an emanation or continuation of the second world, 'olam hab-beri'ah. It is considered as the abode of the angels or intelligences which preside over the celestial bodies, including the sun and planets; further, on earth, over all the manifestations of nature such as fire, light, wind, rain, change of seasons, etc. It is also called the world of the builders, constructive as opposed to ideally planning architects, reminiscent of the architects and builders of The Secret Doctrine; therefore 'olam hay-yetsirah is frequently referred to by its Chaldean name for angels (messengers or builders) -- Mal'achayya'.
Following the division into ten, as is the case in the superior spheres, the angelic hosts are grouped into ten classes as:
Mal'achim Messengers, Angels, Builders 'Er'elim Heroes or Mighty Ones Seraphim Fiery Ones Hayyoth Lives 'Ophanim Wheels Hashmallim Shining Ones 'Elim Imbodied Divinities 'Elohim Gods Benei 'Elohim Sons of the Gods 'Ishim Men (cf Zohar ii, 43a)
In this 'olam there is little taint of the earthly matter found in the world of action , the fourth world, 'olam ha-'asiyyah , emanated from the yetsiratic world.

underdeveloped nations, such as in Asia, Latin America, and Africa.