How many countries are on the continent of South America? My answer is 12 BUT my classmate said it is thirteen. I am pretty sure I am the one that is right. Can you help?

2 answers

12, I think.
South America has 13 political units.

http://geography.about.com/library/maps/blrsouthamerica.htm

However, French Guiana is not an independent country, but an overseas part of France. Is it a country?

http://en.wikipedia.org/wiki/French_Guiana