4. Mention any three ways of preserving our traditional technology and
skills.

museums

making poems out of the skills learnt traditionally

Explanation:

museums are the best place to preserve traditional technology like example

the tools used during the evolution of man

"social stratification refers to the way people are ranked and ordered in society. in western societies, stratification is primarily seen and understood as a result of socioeconomic status, which produces a hierarchy in which access to resources, and possession of them, increases from the lower to the upper strata"