Archaeology
Archaeology, or archeology, is the study of human activity through the recovery and analysis of material culture. The archaeological record consists of artifacts, architecture, biofacts or ecofacts, and cultural landscapes. Archaeology can be considered both a social science and a branch of the humanities. In North America, archaeology is considered a sub-field of anthropology, while in Europe archaeology is often viewed as either a discipline in its own right or a sub-field of other disciplines.
Prehistory
Human prehistory is the period between the use of the first stone tools c. 3.3 million years ago and the invention of writing systems. The earliest writing systems appeared c. 5,300 years ago, but writing was not used in some human cultures until the 19th century or even later. The end of prehistory therefore came at very different dates in different places, and the term is less often used in discussing societies where prehistory ended relatively recently.