How do people know how primitive people lived?

People learn about previous historical events through historical sources. The life of primitive people is no exception. A historical source should be understood as any object of study from which historical information can be extracted. Primitive society was connected with nature more strongly than any subsequent formation, therefore the range of sources there expands and they are studied not only by the humanities, but also by natural sciences. For example, the science of archeology – studies the remnants of the material culture of people, and on this basis restores their spiritual life and social relations. Ethnography is the study of culture, anthropology is the study of man. And there are many such sciences, they all give an understanding of how people lived in antiquity.