Summer Olympic Games demand for tickets to all levels of each event, there was controversy when seats set aside for sponsors and National Delegations went unused in the early days. A system of reallocation was put in place so the empty seats were filled throughout the Games. Rio de Janeiro, Brazil hosted the 2016 Summer Olympics, becoming the third city in the Southern Hemisphere to host the Olympic Games after Melbourne, Australia, in 1956 and Sydney, Australia, in 2000, and the first South American city to host the Olympics. The preparation for these Games was overshadowed by controversies, including the instability of Brazil's
Winter Olympic Games war, the 1944 Games, originally scheduled for Cortina D'Ampezzo, Italy, were cancelled. St. Moritz was selected to host the first post-war Games in 1948. Switzerland's neutrality had protected the town during World War II, and most of the venues were in place from the 1928 Games, which made St. Moritz a logical choice. It became the first city to host a Winter Olympics twice. Twenty-eight countries competed in Switzerland, but athletes from Germany and Japan were not invited. Controversy erupted when two hockey teams from the United States arrived, both claiming to be the legitimate U.S. Olympic hockey representative. The