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.
Architecture of Taiwan
Prehistoric man made use of caves for their dwellings and Taiwan's oldest known civilization is the Changbin culture (長濱文化) dating back to over 50,000 years. An example of an archaeological site of a cave dwelling is the Bashian Caves in Changbin Township, Taitung County which is dated from between 5,500 and 30,000 years. The actual cave itself has a height of around ten meters and can accommodate some ten persons.