Languishing in the azure Mediterranean Sea, the picturesque Ionian Isles seem an unlikely venue for vast international trade and the spread of Mexican dollars. Undoubtedly, early links with Venice helped, but the influences of France, Turkey, Britain and, ultimately, Greece have left indelible marks. In 1814, occupying French forces abandoned Corfu. Soon after the Napoleonic collapse, Ionia found itself hosting a 'protector',...