Proper noun
Southern Cone
The southern portion of South America, consisting of Argentina, Chile and Uruguay, sometimes southern Brazil, São Paulo state and Paraguay.
Many people of the Southern Cone regard themselves as full members of the Western civilization. Source: Internet
The reference to South America instead of other regions (like Latin America or the Southern Cone) has relatively increased in the last decades, due to geopolitical dynamics (in particular, the rise of Brazil in the subcontinent). Source: Internet