Hello aspirant

Points about late harappan culture:

• The Indus River Valley Civilization, also known as Harappan civilization, developed the first accurate system of standardized weights and measures, some as accurate as to 1.6 mm.
• Harappans created sculpture, seals, pottery, and jewelry from materials, such as terracotta, metal, and stone.
• Evidence shows Harappans participated in a vast maritime trade network extending from Central Asia to modern-day Iraq, Iran, Kuwait, and Syria.
• The Indus Script remains indecipherable without any comparable symbols, and is thought to have evolved independently of the writing in Mesopotamia and Ancient Egypt.

Hope this helps. All the best.