- From referring to the Harappan civilisation as the ‘Sindhu-Sarasvati’ and ‘Indus-Sarasvati’ civilisation, to multiple mentions of the ‘Sarasvati’ river, including noting its desiccation as one of the reasons for the decline of the Harappan society, to a mention of India having had a “prime meridian of its own” called the ‘Ujjayini meridian’.
- The new NCERT Class 6 Social Science textbook incorporates new perspectives, including references to the 'Sarasvati' river and its desiccation as a contributing factor to the decline of the Harappan society.
- The Indus Valley Civilization (IVC), also known as the Harappan Civilization, is one of the world's oldest urban cultures, dating back to around 3300 BCE to 1300 BCE. It was a Bronze Age civilization that flourished in the northwestern regions of South Asia, primarily in present-day Pakistan and northwest India.
Geographic Spread and Major Sites
The IVC extended over a vast area, encompassing parts of modern-day Pakistan and India. Key archaeological sites include:
- Harappa (Punjab, Pakistan): One of the first sites to be excavated, giving its name to the civilization.
- Mohenjo-daro (Sindh, Pakistan): Known for its advanced urban planning and the Great Bath.
- Dholavira (Gujarat, India): Notable for its unique water conservation system.
- Lothal (Gujarat, India): An important port city with a dockyard.
- Rakhigarhi (Haryana, India): One of the largest Harappan sites.

Urban Planning and Architecture:
The urban planning of IVC cities is a testament to their advanced engineering skills. Key features include:
- Grid Layout: Cities were laid out in a grid pattern with streets intersecting at right angles.
- Drainage System: An elaborate drainage system with covered drains and soak pits.
- Granaries: Large storage structures for surplus grain.
- Houses: Built with standardized burnt bricks, featuring multiple rooms and wells.
Economy and Trade:
The Harappan economy was primarily agrarian, supplemented by trade and commerce. Key aspects include:
- Agriculture: Wheat, barley, peas, and cotton were the main crops.
- Trade: Extensive trade networks with Mesopotamia (present-day Iraq), Afghanistan, and other regions. Evidence of trade includes seals, beads, and pottery.
- Craftsmanship: Skilled in metallurgy, bead-making, and pottery. The famous "Dancing Girl" bronze statue from Mohenjo-daro exemplifies their metallurgical prowess.
Script and Seals:
The Harappan script remains undeciphered, but numerous seals and inscriptions have been found:
- Seals: Made of steatite, featuring animal motifs and inscriptions. The "Pashupati Seal" depicting a seated figure surrounded by animals is notable.
- Script: Consists of pictographic signs, yet to be fully understood.
Social and Political Organization:
The social and political structure of the IVC is inferred from archaeological evidence:
- Society: Likely egalitarian with no clear evidence of a ruling class or centralized monarchy.
- Religion: Evidence of worship of mother goddess figures, animal worship, and possible proto-Shiva worship.
Decline of the Indus Valley Civilization:
The decline of the IVC around 1900 BCE is attributed to several factors:
- Climate Change: Shifts in the monsoon pattern leading to reduced rainfall and droughts.
- River Changes: Changes in the course of the Indus and Ghaggar-Hakra rivers affecting agriculture and settlement patterns.
- Invasion Theory: Earlier theories of Aryan invasions have been largely debunked in favor of environmental causes.
