This, in an industry that grew out of a slapdash foot cover constructed from leather and grass. Rubber soles, a technological innovation of the 1800s, gave birth to the modern athletic shoe. Keds became the first mass marketed “sneaker” a term coined circa 1917 by an advertising executive who noticed that rubber soles allowed people to sneak around unheard.. 7. Relationship Building Nothing has changed people still do business with people they trust and like. Going back to Dale Carnegie,…