Trade and Exchange
- One of the sources of Harappan economy was trade and exchange activities.
- Harappans had close trade contacts with the Mesopotamians and also with various cultures of India.
- The Harappan seals and materials have been found in the Sumerian sites in Oman, Bahrain, and Iraq and Iran.
- The cuneiform inscriptions mention the trade contacts between Mesopotamia and Harappans.
- The mention of “Meluhha” in the cuneiform inscriptions refers to the Indus region.
- A Harappan jar has been found in Oman.
- Harappan seals, weights, dice and beads are found in Mesopotamia.
- Carnelian, lapis lazuli, copper, gold and varieties of wood were exported to Mesopotamia.
- Harappans also interacted with various regions of India and acquired raw materials and processed them.
Weights and Measures
- Harappans had developed proper weights and measures.
- Since they were involved in commercial transactions, they needed standard measures.
- Cubical chert weights have been unearthed from Harappan sites.
- The weights exhibit a binary system.
- The ratio of weight is doubled as 1:2:4:8:16:32.
- The small weight measure of 16th ratio weighs 13.63 grams.
- They also used a measuring scale in which one inch was around 1.75 cm.
- Weights made of chert were cubical.
- They used binary numbering system (1, 2, 4, 8, 16, 32, etc.).
- They might have been used for weighing jewellery and metal.
Seals, Sealing and Scripts
- The seals from various media such as steatite, copper, terracotta and ivory are frequently found in the Harappan sites.
- The Harappan script has not yet been convincingly deciphered.
- About 5,000 texts have been documented from the Harappan sites.
- The longest text has about twenty six signs.
- Some scholars are of the view that it is Dravidian.
- Seals might have been used as an identity marker on the materials that were transported.
- They might have indicated the ownership.