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
Sierra Leone at the 2000 Summer Olympics Committee on 1 January 1964. The nation made its Olympic debut four years later in the 1968 Summer Olympics, but did not make their second appearance until the 1980 Moscow Olympics. They have sent athletes to every Summer Olympic Games since Moscow, making these Sydney Games their seventh appearance. Sierra Leone has yet to appear at the Winter Olympic Games. The 2000 Summer Olympics were held from 15 September to 1 October 2000; a total of 10,651 athletes represented 199 National Olympic Committees. Their delegation to Sydney consisted of three competitors, two track and field athletes; Alpha B. Kamara and