G. A. Birmingham, The Island Mystery — Chapter 3 (1918)
“ Gorman saw several reasons, excellent ones, why Daisy Donovan could never be queen of Megalia. He began to explain them. Kingdoms cannot be bought and sold like horses. There are emperors and other kings to consider. There is the Balance of Power in Europe. There are ambassadors, chancelleries, statesmen. He was not at all sure that the Monroe Doctrine, in an inverted form, might not be an absolute bar to the purchase of a European kingdom by an American. Donovan brushed the difficulties aside. ”
