Anthropology

Anthropology
Anthropology refers to the study of human origins.

Within the Stargate program Daniel Jackson was the first to put it into use determining the background of the people of Abydos.

After that it was acknowledged that, if the human race mostly came from earth, most human populations on alien planets could trace their histories to earth history. Therefore their customs, language and even how they got to be replaced to their respective alien planets could be deduced by their respective ancestors on earth.

It was known SG-3 included someone that probably had a background in archeology or/and anthropology and one could assume the SGC employed more to study races encountered that had ties to ancient earth.

There are several reported cases where knowledge of a planet's people's ancestral oringins lead to breakthroughs for SG teams; For example in identifying supposed gods, technologies or alien races such as the Go'uld or the Asgard.