In the context of early advertising, the invention of the made advertising via posters, handbills, and signs possible.

The printing press.

Explanation:

The printing press and its form of works are known to be an early age form that have been used and still in use for advertising. Advertisements of this form are seen in form of newspapers or magazines and are sometimes included as brochures or fliers. Write ups used in the print media to grab the attention of the specific target audience comes under the purview of print advertising.

Newspapers readers and also other publications methods have a tendency to browse the print ads that they come across. Moves to purchase these products could possibly not be instantaneous, but it does settle down in their subconscious mind. Next time they see the product in the market, they are tempted to buy it.

answer; risk transference;