Birsa Munda demanded the tribal farmers by boycott of 'Beth Begari System'. What was this 'Beth Begari System'?

One of the key motives behind the Birsa Munda movement was the notion of beth begari, or bonded labour. Forced labour is the main component of the Beth Begari system. As a result, the conflict began with the landlords and progressed to the ruling British authorities and Christian missionaries, who irritated the mundas with their excessive emphasis on conversion.