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It started around in the 1910s, 1920s when psychology was introduced to advertising: https://en.wikipedia.org/wiki/History_of_advertising https://en.wikipedia.
by legulere 6y ago
It started around in the 1910s, 1920s when psychology was introduced to advertising:
https://en.wikipedia.org/wiki/History_of_advertising https://en.wikipedia.org/wiki/History_of_advertising