Free trade helps countries exchange goods and services through agreements that everyone can work with. But when protectionism takes hold and tariffs start piling up, trade partners can find themselves in a full-out trade war.

The trickle doesn't always reach all the way down with supply-side economics.

Gross Domestic Product data isn’t perfect but it’s still the best economic growth gauge available.

Even friendly red monsters aren’t exempt from the law of supply and demand. It may not always be about Elmo, but the kind of craze shoppers saw during the 1998 holiday season happens again and again - and teaches us an important economic truth.