From world fairs to industry-specific shows
The great international exhibitions of the 19th century tried to show almost everything: manufacturing, machinery, art, transport, agriculture and national achievements under one event brand.
Around the turn of the 20th century, another format became increasingly important: the specialist exhibition. Instead of attracting the whole world to see every industry, organisers built events around a specific sector and attracted an audience already interested in that subject.
Automobiles provide one of the clearest examples. The official Paris Motor Show traces its origins to 1898, when the Exposition Internationale d'Automobiles was held in the Tuileries Gardens as an event devoted specifically to the new motor car. New York followed with its first automobile show at Madison Square Garden in 1900.
This shift is fundamental to the modern trade-show model: the organiser no longer has to create interest from nothing. The people entering the hall already care about the industry.