Saudi Arabia is a very wealthy country because they produce lots and lots of oil... Bolivia may very well be on the way to becoming the next "wealthy" country because they have 50-70% of the world's "Lithium..."
Lithium is a soft white mineral that has a number of uses. It's used as a mood stabilizer in drugs, it's used as a rocket propellant , it's used to make heat resistant glass - but more recently it's used in batteries...
Lithium is rapidly becoming the preferred battery for laptops, cell phones and now - batteries for electric cars... The demand for lithium is projected to triple in the next 15 years - which translates into lots and lots of $$$...