the aryans
The iqtadari system was introduced by Iltumish in india. This is a system pertaining to division/partition of land.
3000 castes and 25000 sub-castes
It allowed people to move between castes
Indians introduced it.
The Harijans are the schedule castes or low castes in India.
There are five levels: Brahman, Kshatriya, Vaishya, Shudra, and Harijans. Each of these castes is referred to as a jati. People are expected to live the entirety of their lives within their castes; there is no change in fate. This system has been enforced in India for ages and has instilled a sense of expectancy in its people.
The castes are known as varnas. The lowest of these are not allowed to associate with the people who are part of the higher castes.
never
1950
1919
The metric system was introduced in 1958.
1885