The people of the Indus River Valley would trade crops (wheat, rye, peas, and rice & craft goods as in jewelry and beads
Sealings were used in ancient times for trade. They would be made on ceramics or the clay tags used to seal the rope around bundles of goods. Ancient Mesopotamian seals from the same period functioned in this manner. Numerous Indusseals have been found in ancient Mesopotamian cities.