By the 19th century, "expos" that encouraged arts, manufactures and commerce had become international. They were not only hugely popular but affected international ideas. For example, the 1878 Paris Exposition facilitated international cooperation about ideas, innovations and standards. From London 1851 to Paris 1900, "in excess of 200 million visitors had entered the turnstiles in London, Paris, Vienna, Philadelphia, Chicago and a myriad of smaller shows around the world." Since World War II "well over 500 million visits have been recorded through world expo turnstiles". As a form of spectacle and entertainment, expositions influenced "everything from architecture, to patterns of globalisation, to fundamental matters of human identity" and in the process established the close relationship between "fairs, the rise of department stores and art museums", the modern world of mass consumption and the entertainment industry.