There is no way to know for certain, as it has evolved slowy since prehistoric times. From the most basic etiquette of not snatching somebody else's food to having 5 forks on a formal table setting is a long, slow journey.Begin your search with a study of Sociology and Ancient History.
Jorge Arditi has written: 'A genealogy of manners' -- subject(s): History, Etiquette, Diplomatic history, Diplomatic etiquette, Foreign relations
it's always been evolving
Etiquette has changed as history brings about changes as most things are modernized. See related link below for a site about etiquette during the 1800s.
Emilio Bonfatti has written: 'La \\' -- subject(s): Etiquette, History
Etiquette 101 - 2004 Wedding Etiquette was released on: USA: 17 August 2008
Etiquette 101 - 2004 Dining Etiquette was released on: USA: 16 December 2006
Etiquette 101 - 2004 Etiquette for Everyone was released on: USA: 19 November 2005
Charlotte Ford has written: 'Twenty-First-Century Etiquette' -- subject(s): Etiquette 'Etiquette' -- subject(s): Etiquette
etiquette is what, and protocol is when
See related answer :How did Etiquette begin.
Etiquette is the correct spelling.
These mushrooms are quite etiquette!