So, you think money is the root of all evil? According to this list, it just might be the root of all happiness. Money certainly brings joy to the lives of these young billionaires – after all, who wouldn't want to be a millionaire (or billionaire)?

You might be surprised to learn that the United States is not the richest country in the world. In fact, it comes in at number 11 on the list, with a GDP of over $23.32 trillion. So what country takes the number one spot?

There is no doubt that China is a powerful country. It has the world's largest population, and its economy is growing rapidly. China is often cited as a potential world power, but there are several reasons why it may never achieve that status.