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 1900 Summer Olympics were already planned for Paris and, except for the 1906 Intercalated Games, the Olympics did not return to Greece until the 2004 Summer Olympics. Four years later the 1900 Summer Olympics in Paris attracted more than four times as many athletes, including 20 women, who were allowed to officially compete for the first time, in croquet, golf, sailing, and tennis. The Games were integrated with the Paris World's Fair and lasted over 5 months. It is still disputed which events exactly were "Olympic", since few or maybe even none of the events were advertised as such at