Book excerpt: Portuguese Asia, otherwise known as the Estado da Ãndia Oriental, has been far less studied than the Spanish empire in America, its counterpart in the Western hemisphere. It differed from that vast entity in that it was essentially a maritime trading operation held together by strategic territories, such as Goa, Ceylon, or Macau. For more than a century these afforded it control of much of the Indian Ocean. As Professor Winius shows, it was certainly the most peculiar and colourful operation that existed in the history of European expansion, even giving rise to a second, 'shadow' empire created by escapees and renegades from its royal administration. Some of these essays reflect on Portuguese involvement in other areas, notably the Atlantic, and the impact this had in the East, but their focus is on the Portuguese in South and Southeast Asia. They describe its nature and its rise and fall, from the first voyage of Vasco da Gama to its dismemberment by the Dutch in the mid-seventeenth century, and include studies on the jewel trade and on the Renaissance in Goa.