Keywords: Social history 20th century ; Economic history 20th century ; World politics 20th century ; Equality ; Knowledge, Sociology of ; History Philosophy ; Social history 20th century ; Economic history 20th century ; World politics 20th century ; Equality ; Knowledge, Sociology of ; History Philosophy ; Developed countries Relations ; Developing countries ; Developing countries Relations ; Developed countries ; Bibliografie ; Weltpolitik ; Globalisierung ; Kulturelle Identität ; Pluralismus ; Gesellschaft ; Entwicklung