Final answer:
Ethical imperialism best describes the imposition of one culture's values onto another, differing from cultural relativism which seeks understanding without judgment.
Step-by-step explanation:
The term that best describes an attempt by one culture to impose its values on another culture is ethical imperialism. This is in contrast to cultural relativism, which is the practice of viewing and understanding a culture within its own context, without making judgments based on the standards of one's own culture. Ethical imperialism aligns more closely with moral absolutism, which posits that there are universal moral standards that apply across all cultures.