Exchange in the Indian Ocean Notes

Causes of Expanded Exchange in the Indian Ocean

  • Expansion of Islam: Connected trade networks across East Africa, East Asia, Southeast Asia, and South Asia through Muslim Arab and Persian seafarers.
  • Thriving Port Cities: Cities on the west coast of India, such as Calicut and Cambay, became major commercial hubs for West-East exchanges.
  • Regional Specialization:
    • India: High-quality cotton fabrics, carpets, high-carbon steel, tanned leather, artisan stonework, and pepper.
    • Spice Islands (Malaysia and Indonesia): Nutmeg, cinnamon, cloves, and cardamom.
    • Swahili Coastal Cities: Slaves, ivory, and gold.
    • China: Silks and fine porcelain.
    • Southwest Asia: Horses, figs, and dates.
  • Indian Ocean Slave Trade: Slaves from eastern Africa were transported over land or sea to Northern Africa, the Middle East, India, and Madagascar, serving in shipping, households, sailing, or military roles.

Technological and Environmental Factors

  • Monsoon Winds: Navigators timed voyages based on seasonal patterns, with northeast winds in winter and southwest winds in spring and summer.
  • Sailing Innovations:
    • Lateen Sails: Triangular sails designed to catch winds from multiple directions.
    • Stern Rudder: Classical Chinese invention enhancing stability and maneuverability.
    • Dhows: Small wooden vessels utilized by Arab and Indian sailors.
    • Astrolabe: Muslim navigators in the 12th century improved this device to determine latitude relative to the equator.

Political Growth and State Interventions

  • Sultanate of Malacca (Melaka): Grew prosperous by levying fees on ships using the Strait of Malacca; expanded into Sumatra and the southern Malay Peninsula in the 1400s until Portuguese invasion in 1511.
  • Customs and Revenue: States supervised production efficiency and imposed import customs; the Rajput kingdom of Gujarat became a key trade intermediary, generating substantial state revenue.

Effects of Expanded Exchange and Diasporic Communities

  • Merchant Diasporas: Long port stays during wind changes fostered cultural diffusion through permanent settlements and intermarriage:
    • Muslim Merchants: Active in China, Indian Ocean Basin, and Europe.
    • Chinese Merchants: Active in Southeast Asia and Africa.
    • Sogdian Merchants in Samarkand: Primary overland caravan traders along the Silk Roads and China.
    • Jewish Merchants: Active in China, India, and Europe.
    • Malay Merchants: Active in Sri Lanka.
  • Swahili City-States: Commercial centers along the Zanj Coast—such as Kilwa, Mombasa, and Zanzibar—traded raw materials for imported finished goods, spending accumulated wealth on stone and coral mosques and homes.

Cultural Transfers and the Voyages of Zheng He

  • Ming Dynasty Expeditions: Emperor Yongle initiated seven naval voyages commanded by Admiral Zheng He (1371–1433) starting in 1405, employing up to 300 ships and 28,000 personnel to display power and collect tribute.
  • Geographic Reach: Reached Indonesia, Ceylon, Arabia, East Africa, and the Cape of Good Hope, opening markets and temporarily suppressing regional piracy.
  • Policy Reversal: Confucian scholars viewed the costly expeditions as threats to China's agrarian order; Emperor Zhu Gaozhi ended the voyages, outlawed building ships with more than two masts, and permitted the return of coastal piracy.