The Indus Valley civilization, existing from 3300 to 1700 BCE across parts of modern-day Afghanistan, Pakistan, and northwest India, was marked by advanced urban planning, a strong central government, and a complex society with a distinct class structure. Artisans produced various crafts, including clay sculptures and pottery, while the economy thrived on agriculture and extensive trade networks. The civilization faced collapse due to ecological factors such as flooding and population growth, as well as the potential invasion by Aryans.