In the country of Burnada, citizens are restricted from moving out of the strata they are born into. Also, individuals are allowed to engage only in the same occupation as their parents. The system of social stratification being practiced in Burnada can be identified as a

Caste System.

Explanation: A caste system is a process of putting people in occupational groups qnd social interactions which can be due to religion mostly Hinduism or deep rooted tradition that instills division of labour. Caste system in Burnada can also be seen in countries like Indian too.

People who failed to live up to the expectations of the caste system were considered to be impure and termed "Untouchables" and it was believed that associating with them would pollute or contaminate that person. The untouchables were made to do discriminating jobs which includedleather-work, or killing rodents.

In order to be brought back into the caste system, the polluted person would follow through some rituals.

Failure to return back will afford the person or persons a non beffiting burial if they died.

the minoan civilization flourished in the middle bronze age on the island of crete located in the eastern mediterranean from c. 2000 bce until c. 1500 bce. with their unique art and architecture, and the spread of their ideas through contact with other cultures across the aegean, the minoans made a significant contribution to the development of western european civilization as it is known today. labyrinth-like palace complexes, vivid frescoes depicting scenes such as bull-leaping and processions, fine gold jewelry, elegant stone vases, and pottery with vibrant decorations of marine life are all particular features of minoan crete.  

so basically their unique way of ding arts, as well as architecture.