In a system, people are placed into a given level of society at birth, and they remain at that level throughout their lives.

A good answer would be "caste". A caste system is the social hierarchy in India in which people are first assigned one of the four main castes (scholars, warriors, farmers, servers) and then additionally often also to smaller castes (farmers of rice, of bananas). The social mobility is very low.

Probably north korea if your family has decided to use only nuclear power.

Answeris associated with sunny,dry weather;