Suggest an editImprove this articleRefine the answer for “What is the root of a tree (root)?”. Your changes go to moderation before they’re published.Approval requiredContentWhat you’re changing🇺🇸EN🇺🇦UAPreviewTitle (EN)Short answer (EN)**The root** is the top node of a tree, the one the entire structure starts from, and a tree always has exactly one. **Key point:** the root is the entry point into a tree, the main node from which all the other elements of the structure grow.Shown above the full answer for quick recall.Answer (EN)Image**The root** is the **top node of a tree**, the one the entire structure starts from. **Characteristics:** - The root **has no parent**. - All the other branches of the tree extend from it. - From the root you can **reach any other node** by moving down along the edges. **Example:** ```javascript A ← root / \ B C / \ D E ``` Here `A` is the root of the tree. **Features:** - A tree **always has exactly one root**. - If the root is removed, the tree splits into separate subtrees. - In recursive structures (for example, in search), the work almost always starts at the root. **Summary:** The root is the **entry point** into a tree, the main node from which all the other elements of the structure grow.For the reviewerNote to the moderator (optional)Visible only to the moderator. Helps review go faster.