In front of every major city of the 7 Rivers civilization, caravanserais welcomed merchants from all directions. This detail, which I find extraordinary, captures the spirit of an entire civilization: open, trading, hospitable — and yet, without palaces, without armies, without any glorification of the ego.
What I want to explore here is what this commercial organization reveals about the deeper nature of the civilization I call Sapta Sindhu — the 7 Rivers civilization. For trade there was not simply an economic activity: it was the expression of a relationship with the world, a trust in the other, an openness that stands in radical contrast with what we know of other civilizations of that period.
The 7 Rivers civilization was a peaceful, trading society. It exported far more than it imported. Its products circulated toward Mesopotamia, the Arabian Peninsula, Bahrain, and Iran — by sea and by land. Sumerian cuneiform tablets mention Meluhha, the name of this civilization, in the context of commercial transactions. Tablets record exchanges of carnelian beads and other luxury items. Archaeologists have even identified Indus merchant colonies in Mesopotamia. This commercial network was of remarkable sophistication.
Exports were multiple: agricultural products — wheat, barley, lentils —, cotton textiles, ceramics, precious stone jewelry, copper and bronze objects, shells used to make bracelets. In return, the civilization imported precious metals — gold and silver —, lapis lazuli from Afghanistan, and exotic materials it did not produce itself. It was a balanced, reasoned trade, anchored in the complementarity of resources.
Exchanges were made by land, by caravans, and by sea. Navigation was the safest and fastest route for long distances. At Lothal, in Gujarat, the remains of what has long been called a port are still clearly visible — and in my view, it was more probably a shipyard, as confirmed to me by Breton sailors I consulted: a place where boats were built and repaired, not merely moored. This detail matters: a civilization that built its own vessels mastered its relationship to the sea; it did not depend on others to navigate toward its trading partners.
The caravanserais placed in front of the city gates were the visible infrastructure of this openness. They constituted the first space of encounter between the civilization and its visitors. Merchants were received, negotiations took place, exchanges happened before anyone even entered the city — for the entrance gates were exactly one cart wide, meaning a toll was required to enter the urban space. This arrangement is not trivial: it reveals a precise organization of trade, a clear boundary between the public space of commerce and the urban space proper.
Goods were accompanied by finely engraved steatite seals bearing a script that no one has been able to decipher to this day. These seals — of which thousands have been found in various regions, including Bahrain and Mesopotamia — probably indicated the seller and/or the cargo. They testify to a commercial system structured enough to require traceability of goods, a form of authentication of exchanges. Trading posts in Iran and Sumer served as transit points for goods en route westward — points of storage, redistribution, and exchange with local populations.
What strikes me in all of this is the total absence of any conquering dimension. The 7 Rivers civilization traded; it did not invade. It opened itself to the world through its merchants and its ships, without seeking to dominate the civilizations with which it exchanged. No army to protect the trade routes, no traces of raids or looting. Trade was founded on mutual trust, symbolized by those seals that everyone recognized.
This commercial openness was also a cultural one. Exchanges with Mesopotamia, Iran, and the small civilizations to the north were not only economic: they involved encounters, mutual influences, a circulation of ideas and practices. The presence of Mesopotamian-style seals in the Indus valley, and of Indian seals at Ur and Kish, testifies to real cultural interpenetration. The merchants who stopped at the caravanserais were not merely transporters of goods: they were carriers of cultures.
What I take from all of this is a fundamental lesson: a civilization without centralized ego, without conquering king, without army, can nonetheless organize long-distance trade of remarkable sophistication. Trade does not need domination to function. It can rely on trust, hospitality, and complementarity. The caravanserais in front of the cities of Sapta Sindhu are the architectural proof of this.
To better understand the society that made this openness possible — its urban planning, its collective values, its infrastructures in service of the common good — I invite you to (re)read the article on the drainage system under the streets, which illustrates that same concern for the collective. To grasp the agricultural context that generated the surpluses enabling these exports, the article on grid cultivation is essential. And to understand why this ego-free trading civilization finds an echo in the Vedic hymns, the article on the ritual preparation of Soma offers a striking counterpoint.
