Here's a breakdown of the South American countries where Spanish is spoken:
* Argentina
* Bolivia
* Chile
* Colombia
* Ecuador
* Guyana (English is the official language, but Spanish is widely spoken)
* Paraguay (Guarani is also an official language)
* Peru
* Suriname (Dutch is the official language, but Spanish is spoken by a significant portion of the population)
* Uruguay
* Venezuela
While Spanish is the dominant language in these countries, there are regional variations in pronunciation and vocabulary. There are also indigenous languages spoken in many parts of the continent, like Quechua and Aymara.