State and National Boundaries of the United States

With the exception of oceans, boundaries are artificial, man-made divisions of geography that many times make little sense and sometimes no sense at all. For example, why does the northern boundary of Minnesota protrude into Canada? Why does West Virginia have two panhandles? Why do Pennsylvania and Delaware have a common boundary that is a circle segment? Why do the boundaries of Colorado, Wyoming and Utah consist entirely of lines of latitude and longitude? The answers to these questions and m