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podcast transcript
For thousands of years before Europeans crossed the Atlantic or steamships crossed the oceans, the Indian Ocean connected most of the known world.
Riding the monsoon winds, merchants transported spices, silk, gold, ivory, ceramics, and ideas between Africa, Arabia, India, Southeast Asia, and China.
Along these routes, religions spread, empires rose, and some of the world’s wealthiest trading cities emerged. It was a commercial system that shaped history long before the modern global economy existed.
Learn more about Indian Ocean trade and how it helped shape civilization in this episode of Everything Everywhere Daily.
Almost everything in world history can be thought of in terms of the movement of people, goods, and ideas. Therefore, certain trade routes had an enormous impact on world history. The Mediterranean and the Silk Road were two trade routes that built several civilizations.
Often lost in the chaos is the impact that Indian Ocean trade routes have created throughout world history.
The Indian Ocean and surrounding areas, including the Persian Gulf, Arabian Sea, and Red Sea, have long been short-distance trading zones, and early sailors sailed within sight of the coast.
The earliest evidence of commerce in the region is the presence of seal stones from the Indus Valley as far away as the Sumerian city-state of Ur in modern-day Iraq.
Mesopotamian sailors hugged the coastline in margan boats. The Magan boat is an ancient maritime vessel associated with the Bronze Age Magan civilization, probably located in modern-day Oman, that traded copper and other goods across the Persian Gulf and Indian Ocean.
Trade in the region remained limited until 2500 BC, when sailors began to decipher the monsoon code. The monsoon is a seasonal pattern of warming and cooling in the Indian subcontinent in which wind direction reverses twice a year.
India’s summer months, from May to September, experience consistently high temperatures and winds blowing from southwest to northeast. This pattern is reversed during the Indian winter, from October to April, when the winds blow from the south-east towards Africa.
Early traders from the Red Sea would have traveled quickly through the Arabian Sea and on these winds to India at the appropriate time.
Although Western tradition credits the Greek merchant Hippalus with the ‘discovery of monsoon wind patterns’, sailors in the region had already spent generations building up a vast knowledge of these predictable winds.
Understanding the monsoon improves our ability to move across the Indian Ocean, linking people from the Malay Peninsula, India, and China to ports as far away as East Africa.
The predictability of the winds and the ease with which early navigators could navigate the Indian Ocean transformed history. These early sailors created free trade zones and thriving centers of cultural exchange.
The most notable early journeys were those of the Austronesian peoples. This seafaring legend dates from as early as 3000 BC, using outrigger canoes to advance east from Taiwan into the Pacific Ocean.
It was the journey across the Indian Ocean to Madagascar in the first millennium that marked the beginning of truly long-distance sea travel in this region.
Ships known as dhows revolutionized Indian Ocean navigation. Dhows are traditional sailing ships recognizable by their long hulls and distinctive late sails.
Latin sails are triangular sails mounted on long, angled halyards attached to the mast, allowing ships to sail more effectively upwind than traditional square sails.
Armed with an understanding of monsoon winds and new technologies such as Latin sails, astrolabe, and compasses, navigation in this region grew explosively.
During the pre-Mongol Tang and Song dynasties, China’s prosperity led to a rapid increase in trade. The spread of Champa rice into China dramatically increased food production, which in turn increased production of silk and other luxury goods that were coveted in the region.
Perhaps the greatest change in Indian Ocean trade was the establishment of Islam in the 7th century. Islam spread rapidly after the founding of the country. Persians and Arab Muslims became the region’s dominant seafarers, and their thirst for commercial and religious expansion became the driving force of exchange.
As Islam spread along the Indian Ocean coast, it transformed the region’s trading practices, leading to a dramatic increase in commercial activity. Before the spread of Islam, merchants in the region faced many legal traditions and commercial practices.
Financial transactions around the Indian Ocean were modernized by Muslim merchants, who introduced the use of letters of credit, greatly simplifying local business transactions. The Islamic world valued commerce because the Prophet Muhammad was a merchant.
Moreover, the economic power and stable environment provided by the Abbasid Caliphate led to a surge in demand for exotic spices from South and Southeast Asia and luxury goods from China.
One of the most important features of the Indian Ocean Basin trade network was that each region provided valuable goods that fueled trade. India donated high-quality products, including cotton, carpets, artisan stonework, and pepper.
Further east, the Spice Islands offer an incredible variety of spices, including cinnamon, cloves, and, most coveted, nutmeg (which grew only on the Banda Islands until the 17th century).
China maintained the global standard for luxury goods with silk and porcelain. Across the ocean, Africa provided East African timber, gold, ivory, and slaves, a topic I covered in a previous episode.
The commercial center of the region was Emporia. Emporia was a coastal city bordering the Indian Ocean. Here, merchants came across the rainy season to trade all the goods the region had to offer.
Like the caravanserai of the Silk Road, Emporia was a vibrant and bustling center of commercial and cultural exchange. Caravanserais and emporia both had large merchant groups, but there was one fundamental difference.
Unlike Silk Road merchants, who typically left after a few days, department store merchants settled in for a much longer period of time. For example, a trader leaving East Africa for India in May may reach his goal by early June, but must remain in India until the monsoon winds change in mid-October.
By spending a significant amount of time inside the department store, an environment has been created where one can deeply immerse themselves in the culture. Beyond simply exchanging goods such as cinnamon, merchants participated in a wide-ranging process of cultural diffusion.
Living in a foreign city for six months transforms a merchant from a temporary visitor to a resident who establishes a life within the community. These merchants developed distinct communities and ethnic enclaves, such as the Persian quarter of Zanzibar or the Arab quarter of Calicut.
These interactions resulted in profound cultural changes, and religious beliefs permeated the region more widely than through the Silk Road. Spending long periods of time in various shops made merchants adept at using technology such as paper and compass.
Cultural mixing was a common practice. For example, Swahili developed from Bantu roots with Persian and Arabic influences.
Emporia was a cosmopolitan and dynamic urban centre. Perhaps no city represents this better than Malacca. Malacca occupies a strategic location at the center of the Strait of Malacca, which connects the Indian Ocean and the South China Sea and serves as a gateway for trade.
Malacca’s cultural diversity is enormous. When Tome Pires arrived in 1511, he found a city whose merchants and sailors spoke 84 different languages, which was surprising given its population was estimated at 50,000.
Malacca was an important center of activity for Chinese sailors into the Indian Ocean, including the legendary Ming Dynasty explorer Zheng He. Although the Chinese held a strong position in the region, one of the distinctive features of the early Indian Ocean emporiums was their egalitarian nature.
No single empire dominated the region. Instead, the environment dictated the terms of trade, and competitors coexisted in a system centered on the monsoon rather than hegemony.
Monsoon wind patterns have allowed cities to coexist and carve out their own niches within the region. Arab, Chinese, Persian, Indian, Malay, and Omani merchants all found room for success in Indian Ocean trade.
The Treaty of Tordesillas in 1494 brought significant changes to the region. In the 15th century, Portugal transformed into a maritime power. Armed with navigational knowledge from the Sagres school and a fleet of innovative new ships, the Portuguese emerged as leaders in maritime exploration.
To avoid a maritime dispute between Spain and Portugal, the Pope brokered a treaty that gave Spain access to lands west of the Atlantic and Portugal access to Africa and the Indian Ocean.
The Portuguese immediately collapsed the historical system of the Indian Ocean. The Portuguese were not interested in maintaining regional balance. The Portuguese aimed not simply to participate in trade, but to dominate trade networks.
The Indian Ocean became part of the Portuguese trading post empire. This caused the delicate balance that had existed in the region for millennia to collapse under the weight of Portuguese hegemony and piracy.
The Portuguese did not just offer a different perspective on trade in the region. They also brought advanced weaponry.
The Portuguese initially misjudged Indian Ocean trade. When Vasco da Gama entered the region in the late 15th century, he was unaware of its traditions and the extent of its trade.
One account explains that da Gama requested a meeting with the Hindu leader of Calicut and offered him a gift as an introduction. Gifts consisting of cloth, sugar and honey were not well received. In Calicut in the 15th century, a much higher level of gifts became accustomed.
At first, no one could match Portose’s firepower. However, this changed in the early 16th century when the Ottoman Empire expanded and took control of Egypt and the Red Sea. The Ottoman Empire’s access to East Africa posed a serious threat to the Portuguese.
With the Ottomans aiding the local sultanate, the two powers clashed at Diu on India’s west coast. The Portuguese repulsed the Ottoman siege of Diu and maintained hegemony in the region. The Battle of Diu served as a precursor. The era of peaceful commerce in this area dominated by monsoon winds is over.
The beginning of imperial rule marked the end of Emporia’s independence and the end of its days as a center of peaceful trade. As imperial troops continued to arrive, these cities turned into minor components of the expanding European colonial movement.
The Portuguese Cartas system, which gave Portugal control over the region, created fierce competition and attracted the attention of powerful joint ventures that came to do business with several European maritime powers.
Driven by profits, the Dutch and British East India Companies completely destroyed the region’s traditional trade routes.
For thousands of years, the Indian Ocean has been the center of vast commercial and cultural networks linking civilizations. Long before the dawn of the modern global economy, merchants followed the monsoon winds to transport goods, people, and ideas between Africa, Arabia, India, Southeast Asia, and China.
Along these sea routes, religions spread, cities prospered, and cultures blended that still shape the world today. The story of Indian Ocean trade is ultimately the story of how humanity became connected long before the modern world existed.
