 Coming from the fields of engineering and science, respectively, the two may approach the same subject, such as soil classification, with different methods.Humans have historically used soil as a material for flood control, irrigation purposes, burial sites, building foundations, and as construction material for buildings.First activities were linked to irrigation and flood control, as demonstrated by traces of dykes, dams, and canals dating back to at least 2000 BCE that were found in ancient Egypt, ancient Mesopotamia and the Fertile Crescent, as well as around the early settlements of Mohenjo Daro and Harappa in the Indus valley.