KQ13: What's so great about the US dollar?

The dollar is the world's most important currency, but some analysts worry it might not stay that way. How much do you know about the greenback? Take the quiz and find out. Nine questions. Go!

If you wanna know more 👇

Here's a nice history of US currency.

Investopedia talks about discontinued currencies such as the $10,000 bill.

There really are some people who think the government should mint a $1 trillion coin.

It costs nearly four cents to make every penny.