Your Spree store allows you to decide in which parts of the world to sell products, and how to group different areas into geographical regions so that you may conveniently set shipping and taxation policies. This is accomplished through the use of zones, countries, and states.
You should already have several countries configured. You may want to edit items on this list based on your needs. To access the Countries list, go to your Admin Interface, click “Configuration”, then click “Countries”.