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.
Etquette has evolved over time differently in different places and within different cultures.First rule must have been don't snatch someone else's food away.
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 Etiquette for Everyone was released on: USA: 19 November 2005
Etiquette 101 - 2004 Dining Etiquette was released on: USA: 16 December 2006
Charlotte Ford has written: 'Twenty-First-Century Etiquette' -- subject(s): Etiquette 'Etiquette' -- subject(s): Etiquette
Etiquette is the correct spelling.
These mushrooms are quite etiquette!
See related answer :How did Etiquette begin.
etiquette is what, and protocol is when