1In the 1920s, a group of British archaeologists discovered a new ancient civilization, the Harappa civilization, in the Indus Valley. This civilization once flourished here for centuries, but it suddenly declined. So what are the geographical reasons?

According to the research on the paleogeographic environment of the Indus Valley, around 2000 BC, the climate of the Indus Valley began to dry up, and the rapid population reproduction led to an increase in food demand, which led to the expansion of agricultural scale and increased damage to the environment, followed by a decrease in rainfall and an increase in climate drought, resulting in desertification, which eventually led to Harry's fear of the disappearance of civilization.

Introduction to Harappa civilization

Indus Valley Civilization is also called Indus civilization or Harappan Civilization. The earliest known urban culture in the Indian subcontinent was first discovered in Halaba, Punjab in 192 1 and in Mohenjo－daro, India, in Sindh in 1922 (both places belong to. Later, it was in Rupar, at the foot of Simla Hills, 600 km (1 000 miles) northeast of Krakat, and in the Gulf of Cambay, 800 km (500 miles) southeast of Krakat. It is more widely distributed than the earlier Mesopotamian civilization and Egyptian civilization. Mohenjo－daro is the earliest large-scale ancient city in the world.