 Pantović worked in New York, Paris and London prior to World War II and Sajam was his first project to be realized and now he was charged with visiting the European fairs and suggestin something completely different from the architecture seen in Belgrade up to that point.The political climate changed in Yugoslavia in the 1950s, as the state broke ties with the Soviet Union.This brought to the ending of the Socialist realism period in Yugoslav architecture and the state wanted to appear as the modern, progressive and open to the world, giving Pantović almost "carte blanche" in choosing the modernist design.