Editing First World (section)

===Other indicators===
Varying definitions of the term First World and the uncertainty of the term in today's world leads to different indicators of First World status. In 1945, the United Nations used the terms first, second, third, and fourth worlds to define the relative wealth of nations (although popular use of the term fourth world did not come about until later).<ref name=macdonald>{{cite book |title=Third World Health: Hostage to First World Health |last=Macdonald |first=Theodore |year=2005 |publisher=Radcliffe Publishing |isbn=1-85775-769-6 |page=4 |url=https://books.google.com/books?id=PCbVkCkmCoIC&q=fourth}}</ref> There are some references towards culture in the definition. They were defined in terms of [[Gross National Product]] (GNP), measured in U.S. dollars, along with other socio-political factors.<ref name=macdonald/> The first world included the large industrialized, democratic (free elections, etc.) nations.<ref name=macdonald/> The [[second world]] included modern, wealthy, industrialized nations, but they were all under communist control.<ref name=macdonald/> Most of the rest of the world was deemed part of the [[third world]], while the [[fourth world]] was considered to be those nations whose people were living on less than US$100 annually.<ref name=macdonald/> If we use the term to mean high-income industrialized economies, then the [[World Bank]] classifies countries according to their [[Gross national income|GNI]] or gross national income per capita. The World Bank separates countries into four categories: high-income, upper-middle-income, lower-middle-income, and low-income economies. The First World is considered to be countries with high-income economies. The high-income economies are equated to mean developed and industrialized countries.