What is the main conflict in The Moor's Last Sigh by Salman Rushdie?

The Moor's Last Sigh tells the family history of Moraes Zogoiby, known as "the Moor." He is the last survivor of a family descended from the Portuguese explorer Vasco da Gama (ca.1469-1524), who sailed to India in search of spice and whose offspring grew rich in shipping it to the West. Among his ancestors, Moraes also numbers Boabdil (Abu 'Abd Allah Muhammad XI, ca. 1460-1527), the last Muslim king in Spain, forced in 1492 to surrender his city to Ferdinand and Isabella.