Summer Olympic Games the time. Numbers declined for the 1904 Games in St. Louis, Missouri, United States, due in part to the lengthy transatlantic boat trip required of the European competitors, and the integration with the Louisiana Purchase Exposition World's Fair, which again spread the event out over an extended period. In contrast with Paris 1900, the word "Olympic" was used for practically every contest, including those exclusively for school boys or for Irish-Americans. A series of smaller games were held in Athens in 1906. The IOC does not currently recognise these games as being official Olympic Games, although many historians do. The
Summer Olympic Games federal government; the country's economic crisis; health and safety concerns surrounding the Zika virus and significant pollution in the Guanabara Bay; and a state-sponsored doping scandal involving Russia, which affected the participation of its athletes in the Games. Tokyo, Japan will host the 2020 Summer Olympics, making it the first Asian city to host the Olympic Games twice. Forty-two sports, spanning 55 disciplines, have been part of the Olympic program at one point or another. Twenty-eight sports have comprised the schedule for three of the recent games, 2000, 2004, and 2008 Summer Olympics. Due to the removal of baseball and