Buenos Aires is the capital and largest city of Argentina. It is geographically located on the southern shore of the Río de la Plata, on the southeastern coast of the South American continent. Greater Buenos Aires is the third largest conurbation in Latin America, with a population of about 13 million. After the internal conflicts of the 19th century, Buenos Aires was federalized and removed from Buenos Aires Province in 1880. The city limits were enlarged to include the former towns of Belgrano and Flores, which are both now neighborhoods of the city. Tango music was born in the suburbs of Buenos Aires, notably in the brothels of the Junín y Lavalle district and in the arrabales (poorer suburbs). Its sensual dance moves were not seen as respectable until adopted by the Parisian high society in the 1920s, and then all over the world. In Buenos Aires, tango-dancing schools (known as academias) were usually men-only establishments. Tango consists of a variety of styles that developed in different regions and eras of Argentina and Uruguay as well as in other locations around the world. The dance developed in response to many cultural elements, such as the crowding of the venue and even the fashions in clothing. The styles are mostly danced in either open embrace, where lead and follow connect at arms length, or close embrace, where the lead and follow connect chest-to-chest.