Final answer:
This situation is an example of cultural assimilation. Vladamir, a Russian immigrant, is insisting on being called Joe and refusing to speak Russian with his Russian-speaking friends, indicating his assimilation into American culture.
Step-by-step explanation:
This situation is an example of cultural assimilation. Cultural assimilation occurs when an individual adopts the values, behaviors, and customs of a different culture. In this case, Vladamir, a Russian immigrant, is insisting on being called Joe and refusing to speak Russian with his Russian-speaking friends, which indicates that he is assimilating into American culture and adopting an English-speaking identity.