Here's why:
* Merg comes from the Latin word mergere, which means "to plunge, to immerse, to submerge".
* This root appears in many English words, such as:
* Emergent: Coming into view, arising
* Immerse: To dip or submerge in a liquid
* Submerge: To go under water
* Merge: To combine or blend together
Therefore, merg is the Latin root that captures the idea of in-merging or plunging into something.