Root
Domain: Data Structures
🎯 Motivation
The root is the topmost node of a tree — the single starting point from which all other nodes descend.
📋 Concrete Example
In a file system, C:\ or / is the root. Every file and folder is nested under it. There is exactly one root per tree.
🔗 Analogy
The founder of a family dynasty. Every descendant traces their lineage back to this one person at the very top of the family tree.