This book is intended to provide the reader with a comparative perspective of the status and evolution of Puerto Rico and other U.S. Flag territories. It is not a book about politics, nor one that explores whether, moving forward, Puerto Rico or other insular areas should remain as territories, become States, or attain any form of sovereign status. Such determination lies in the hands of the U.S. citizens of the several non-state areas and the Congress of the United States. However, for those seeking a political solution, as well as those interested in learning about this most fascinating and controversial subject, this book is a starting point for what I hope will be an intellectually honest discussion.