Give or take a few hundred years.

Advertising (4000 BCE)

https://en.m.wikipedia.org/wiki/History_of_advertising

Fact-checking is literally just a Google search away. Irony intended.

i know what you're saying, but really now, you know what i mean. some scribbles on a pancard or some fish monger shouting above the crowd, it's not the same as the mass media ads that find you everywhere willingly and unwillingy, 24/7. so before 1900, why not, to make it easy. let's go back there.