If you take a look at a map with latitude and longitude included on the map you find that the point 15 degrees south and 45 degrees west is located in Brazil. Brazil is a country located in South America, therefore, this point falls within South America.
The coordinates 15 degrees south latitude and 45 degrees west longitude point to a location in Brazil. Therefore, this location is on the continent of South America. Brazil is located in the southern part of the continent, indicating that these coordinates are within South America.
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