
Today, there have been numerous attempts to discredit the work of both Engels and Morgan, alleging that the evidence on which they developed their theories was either unreliable, outdated or even false.

It was on the basis of this work that Frederick Engels wrote his masterpiece, The Origin of the Family, Private Property and the State. The revolutionary ideas contained in this book represented a complete departure in this field of human development and served to found a materialist, evolutionary school of anthropology.

“The great antiquity of mankind upon the earth has been conclusively established”, wrote the American anthropologist Lewis Henry Morgan in the opening preface of his pioneering work Ancient Society, published in 1877.
