Question

Which social class broadly composed of people involved in blue collar or manual occupations?

Answer 1

The working class or labour class
Hope this helps

Answer 2

The persons involved are the Vaishyas and the shudras.

The Vaishyas are the farmers and they are physically laborious along with the hard work,

The shudras are considered as the low class people and they do various types of works for the upper class peoples which they donot accept to do.

They are treated as the untouchables and mostly all the slaves  are treated like this.