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
Olympic Games ceremony their work during the Games. Next, two other national flags are hoisted on flagpoles one at a time while the corresponding national anthems are played: the flag of Greece to again honor the birthplace of the Olympic Games, and the flag of the country hosting the next Summer or Winter Olympic Games. In Moscow, Soviet Union, during the 1980 Summer Olympics boycott, the flag raised to represent the next games host was that of the City of Los Angeles instead of the flag of the boycotting United States. In Sydney and Athens, two Greek flags were raised because Greece was