What is the origin of the idiom "under one's feet" and when to use it?

The phrase "under one's feet" originated from the image of someone physically standing on or having control over another person or object. It conveys a sense of power imbalance, subordination, or being subjected to someone else's will. This idiom is commonly utilized in discussions about power dynamics, relationships, authority, and situations where one party exerts significant control or influence over another.