No reason to be insulted, it's just reality. Most Americans don't even have a passport, and I'm sure an even smaller percentage of people from the south do. Most people from the south only travel abroad for military or missionary purposes. A number of factors come into play such as average income, the plethora of diverse vacation spots in the US, and a lack of knowledge and curiosity about the rest of the world. For example, if you walked down main street of my hometown with a blank political outline map of Europe and asked 50 random people to identify different countries, I would expect the following results:
Italy: 20/50
France: 15/50
Germany: 10/50
Sweden: 5/50
Switzerland: 1/50
Serbia: huh