If u r historic lover n like to know about origin of shudras must read this. It is a history book written by Indian social reformer Dr. Br Ambedkar which discusses origin of shudras varna.Amazing thing is BR Ambedkar dedicated this book To Mahatma jyotiba phule.(1827-1890) . Duration.
When I read this book I found it so interesting n appealing. It is divided into 2 parts
Part 1- it has 6 chapters explains brahman theory of origin status of shudras. Heartoching shudra versus aryan. Shudras n dasas
Part 2 - Explains hidden story shudras we’re, kshatriya, degradation of shudras n story of reconciliation. Ambedkar also explained here aryan& Indo aryan migration theory.
Especially he stated here that shudras of Hindu society is entirely different from that of indo aryan society. So to know all mixture n amazing history please read this book.