The United States is a large market, but it is only one member of the large global community.
In addition to a growing multicultural society in the U.S. and elsewhere, the Internet has made it much easier for people from all over the world to purchase goods via the World Wide Web.
In some cases, it costs more for customers in South Africa to buy a book in their home country than it does for them to order it from a U.S. store
and have it shipped to Johannesburg. You will not be able to plan for every contingency, but if you have a commercial
presence on the Web, you should account for the global community in your database design.