The cultural basis of relationships in selected, primarily non-western cultures. Less than 15% of them require monogamy, and polygyny is generally practiced by men who can afford it in the rest
Source: chart by editor, source material at http://eclectic.ss.uci.edu/~drwhite/courses/SCCCodes.htm
Map of the United States-State Laws About Same-Sex Unions
Source: Open Source-wikipedia.org. Edited by managing editor to reflect changes to 2008.
Chart Depicting the Social Basis of Polygyny in 176 non-western cultures. Mongamy is required in 15% of them, but marriages with multiple partners occurs at least some of the time in the rest.
Source: chart by editor, source material at http://eclectic.ss.uci.edu/~drwhite/courses/SCCCodes.htm
The Status of Same-Sex Union Legislation in Europe
Source: wikipedia.org-edited by managing editor
Global Recognition of Same-Sex Relationships by Country, 2007