The 1900 Paris Exposition (Exposition Universelle of 1900) was held in Paris, France, from 15 April to 12 November 1900. The style that was universally present in the Exposition was Art Nouveau. Postcard cancellation: 09 Jul 1900 Paris, France. Over 50 million people attended and learned about talking films, Matryoshka doll (Russian Nesting Doll), escalators, etc. ...and where Campbell's Soup was awarded a gold medal (image still on their labels).