The disorientstion people feel when they come into contact with a fundamentally different culture and can no longer depend on their learned assumptions about life is termed?

Culture shock

Explanation:

Culture shock is the disorientstion people feel when they come into contact with a fundamentally different culture and can no longer depend on their learned assumptions about life.

It is also the feeling of uncertainty, confusion, or anxiety that people experience when visiting, doing business in, or living in a society that is different from their own. Social norms can vary significantly across countries and regions.