Paraguay
Brasil
There is no entire country that occupies the space at 60 degrees west and 30 degrees south. This is, however, a point of land that is located in Argentina.
Brasil
Brazil.
Paraguay.
Brazil.
Antarctica.
Montevideo
15 S 47 W is the country of Brazil, South America.
Cordoba, Argentina.
"90 degrees south" is the definition of the south pole. That location is deep in the interior of the Antarctic continent, on which there are no countries.