There are 10 Spanish speaking countries in South America:
Yes, Brazil is a country located in South America. And it is the only country that speaks Portuguese in South America.
Venezuela is a country in South America. It is the only country in South America that starts with the letter V.
French Guiana is a dependent territory of France and is the only country on South America that is not indepentent.
The only English speaking country in South America is Guyana.
French Guiana is the only country in South America that speaks French.
As far as I know there is no country in South America which has the Euro as its currency.
Georgetown is the capital of Guyana (formerly British Guiana) which is the only English speaking country in South America.
Venezuela. It is the only member in South America that is a member of OPEC.
Brazil
Ecuador is the only country in South America that begins with the letter E.
Uruguay is the second smallest country in South America, covering a land area of only 176,220 km2 (68,039 mi2).
Guyana, a small nation on the northern coast of South America, is the only South American country that declares English as its official language.