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
Southern Hemisphere Indonesia, with 261 million people (roughly 30 million of whom live north of the equator on the northern portions of the islands of Sumatra, Borneo and Sulawesi, while the rest of the population lives in the Southern Hemisphere). Portuguese is the most spoken language in the Southern Hemisphere, followed by Spanish and Javanese. The largest metropolitan areas in the Southern Hemisphere are São Paulo (21 million people), Jakarta (18 million people), Buenos Aires (12 million people), Rio de Janeiro (11 million people), Kinshasa (11 million people) and Sydney (6 million) . The most important financial and commercial centers in the