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
Tonga at the 2000 Summer Olympics 1 January 1984. The Kingdom of Tonga made its Olympic debut at the 1984 Summer Olympics, and has appeared at every Summer Olympic Games since then, making these Sydney Games their fifth appearance. They did not make their debut in the Winter Olympic Games until the 2014 Sochi Olympics. The 2000 Summer Olympics were held from 15 September to 1 October 2000; a total of 10,651 athletes represented 199 National Olympic Committees. The Tongan delegation consisted of two track and field athletes; Toluta'u Koula and Ana Siulolo Liku; and weightlifter Tevita Kofe Ngalu. Liku was chosen as the flag-bearer for