I actually covered that in my first post on borders. I know it only works when people are free to draw their own. My larger point stands - borders are natural to humankind...but Europe was able to draw their lines fairly naturally. I'd argue that was not the case for most of the rest of the world including the entire western hemisphere. Go back 200 years and there is little discernible difference between Juarez and El Paso or San Diego and Tijuana or for that matter Maine and Eastern Canada. In fact if language is the determining factor most of Texas all the Way to San Francisco should be a part of Mexico. Maine and a huge swatch of French Canada should be it's own Country and large portions of the great plains should be varying countries of indigenous peoples. Alaska would be half Canadian, half Russian, Hawaii would be it's own thing, same for Puerto Rico and the USVI, etc.
Sorry Earl but I'd say your argument only works for Europe and parts of Asia, everywhere else has too much artificiality in their borders due to colonialism and conquest