(July 5, 2022) The Harappan civilization developed in parallel with the Sumerian civilization but without its intense city-state competition. The two civilizations even traded with each other via the gulf of Aqaba. It developed writing to support that trade although that writing has not yet been deciphered.
The Indus Valley Harappan civilization is most famous for its unicorn bull seals shown below. The one horn indicates that this bull represents the half of the life connective power of the ancient Pagan Paradigm which brings rain. The other half is represented by the sun which brings light and heat. The chaotic storm bull brings rain.
The purpose of these seals was to create trade passes. To quote Harappan archaeologist and expert Mark Kenoyer on their purpose:
Circular tokens with the impressions from square stamp seals on one of both sides were never attached to bundles of goods. In historical times such tokens bearing an official seal were used as passes to control traffic – much like a hauling permit in the modern context; in much the same way – the Indus tokens may have been issued to middlemen or transporters as certificates from a seal owner" (Ancient Cities of the Indus Civilization, pp. 88, 189).