Columbus Day is celebrated in October. And while it may be true that Leif Erikson and the Vikings beat Columbus to the New World, Columbus Day nonetheless remains important in the public eye, signifying themes such as exploration and discovery. As an investor, you don’t have to “cross the ocean blue,” as Columbus did, to find opportunities – but it may be a good idea to put some of your money to work outside the United States. So, why should you consider investing internationally? The chief reason is diversification. If you only invest in U.S. companies, you might do well when the U.S. markets are soaring, as has happened in recent years. But when the inevitable downturn happens, and you’re totally concentrated in U.S. stocks, your portfolio will probably take a hit.