What connected the Indian Ocean before European empires?

Long before the Portuguese arrived, monsoon routes linked East Africa, Arabia, India, Southeast Asia and China into a mature maritime world. It was not an “ownerless sea,” but a shared and contested space of ports, merchants and states. After 1498 the major change was Portugal’s attempt to turn participation in trade into licensed passage backed by armed force.

What you will follow

This guided story moves the same world map through 13 sourced scenes. It begins at the opening rather than dropping you into an unexplained year.

How to read the map: The map uses discrete, approximate border snapshots. A narrated year may use the closest available snapshot, and schematic arrows show relationships rather than precise routes.

Related subjects on the map

• Indian Ocean monsoon trade
• Swahili coast Indian Ocean trade
• Zheng He's voyages

Sources used by this story

1. K. N. Chaudhuri, Trade and Civilisation in the Indian Ocean: An Economic History from the Rise of Islam to 1750 (Cambridge: Cambridge University Press, 1985).
2. Michael Pearson, The Indian Ocean (London: Routledge, 2003).
3. Edward A. Alpers, The Indian Ocean in World History (New York: Oxford University Press, 2014).
4. Lionel Casson, ed. and trans., The Periplus Maris Erythraei (Princeton: Princeton University Press, 1989).
5. Mark Horton and John Middleton, The Swahili: The Social Landscape of a Mercantile Society (Oxford: Blackwell, 2000).
6. Edward L. Dreyer, Zheng He: China and the Oceans in the Early Ming Dynasty, 1405-1433 (New York: Pearson Longman, 2007).
7. Sanjay Subrahmanyam, The Career and Legend of Vasco da Gama (Cambridge: Cambridge University Press, 1997).
8. Abdul Sheriff, Dhow Cultures of the Indian Ocean: Cosmopolitanism, Commerce and Islam (New York: Columbia University Press, 2010).