No, dharma is not part of the Caste System. Dharma is the law created by the Gods and Goddesses for each person to follow. Each person has different dharma.
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The cast of Dharma Bandhan - 1940 includes: Zebunissa
The cast of Dharma Teja - 1988 includes: Sharada
The cast of The Dharma Bum - 2014 includes: Kengo Fukunaga as Kengo Shea Mitchell as The Dharma Bum
The cast of Dharma Vijaya - 1959 includes: Rajkumar Leelavathi
The cast of Dharma Pathni - 1986 includes: Jeevitha Karthik
The cast of Angling dharma - 2001 includes: Candy Satrio as Batik Madrim Anto Wijaya as Angling Dharma
The Cast of Dharma and Greg Where Are They Now - 2012 TV was released on: USA: 2 April 2012
The cast of Jugari Dharma - 1927 includes: Parshwanath Yeshwant Altekar
The cast of Dharma Poratam - 1983 includes: Pandharibai Mohan Babu
The cast of Dharma Dari Tappitu - 1982 includes: Shankar Nag
The cast of Dharma Yuddham - 1979 includes: Rajnikanth Sridevi Thengai Srinivasan
The cast of Dharma Raja - 1980 includes: Shivaji Ganesan Jayalalitha J