History of the world
Whether in prehistoric or historic times, people always needed to be near reliable sources of potable water. Settlements developed on river banks as early as 3000 BCE in Mesopotamia, on the banks of Egypt's Nile River, in the Indus River valley, and along China's rivers. As farming developed, grain agriculture became more sophisticated and prompted a division of labour to store food between growing seasons. Labour divisions led to the rise of a leisured upper class and the development of cities, which provided the foundation for civilization. The growing complexity of human societies necessitated systems of accounting and writing.
History of clothing and textiles
We do not know what the people who constituted the Indus Valley Civilization, one of the earliest civilizations of the world, actually wore. Any cloth that might have been worn has long since disintegrated and we have not yet been able to decipher the Indus script. However, historians and archaeologists have managed to piece together some bits of information from clues found in sculptures and figurines.