When did the concept of using manners enter languages? I know to ‘thank someone ‘ is quite old and has been around since forever but I curious as to when words like ‘please’ or their other language equivalents became popular.

by Insinuous

MeanManatee

You have to clarify this question more. Do you mean to ask when did language invent formality? That we can't possibly know because written language, relative to language itself, is very new. Do you mean when did the word please and thank you become popular in English?