The Indus Valley Civilization lasted from 3300-1300 BCE in South Asia along the Indus River valley. Some of the major cities included Harappa, Mohenjo-Daro, and Dholavira. The cities had advanced architecture like bathhouses, granaries, and drainage systems. The society was primarily urban and agricultural, with most people being farmers or craftspeople. The civilization engaged in extensive trade of goods like shells, stones, and metals. While the language remains undeciphered, archaeology shows a highly developed urban culture with skilled artisans. The civilization eventually declined due to factors like flooding and migration.