That location is in Antarctica. While there are territorial claims to Antarctica, treaties have established that these claims are more-or-less unactionable.
There is no country at the coordinates 80 degrees south latitude and 140 degrees west longitude. It is a point on the continent of Antarctica.
33 degrees south 70 degrees west coordinates correspond to Argentina in South America.
Brazil; these coordinates are a little north of Brasilia.
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.
The coordinates 18 degrees south and 50 degrees west point to the island nation of Mauritius in the Indian Ocean.
What countries would I find at the coordinates given 10degree south 50degree
Argentina
The coordinates of 40 degrees south and 60 degrees west correspond to a location in the South Atlantic Ocean, near the eastern coast of South America. This area is not situated within any country, as it is predominantly water. However, the nearest landmass is the southern part of Brazil, which lies to the northwest of these coordinates.
The coordinates 5 degrees south and 55 degrees west point to South America. More specifically, these coordinates fall in the northern part of Brazil.
Those coordinates fall within Argentina.
The coordinates 50 degrees south and 70 degrees west point to the continent of South America. These coordinates are near the southern tip of Chile, which is located on the western side of South America.
The coordinates 20 degrees South and 140 degrees West lands somewhere between the islands of French Polynesia. The islands of French Polynesia are in the South Pacific Ocean.