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Apparently the first ad was from Egypt. It was made by a slave owner who was trying to find a run away slave, who pud an ad for his weaving shop on the papyrus.
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Industries started producing a lot of things so they started to advertise more.
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Sears mailed over 8000 postcards.
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Advertising on radio launched.
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The first commercial on television apparently aired in 1941.
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the first online ad was created in 1994.