An emerge means something comes out or appears after being hidden or unseen.
When people talk about things emerging, they often mean that new information or facts are coming to light. For example, you might hear about a mystery in the news and then suddenly more details come forward, like a piece of a puzzle falling into place. It's as if something was invisible before, but now it's visible and we can see its importance. You could also talk about an idea or feeling that emerges after a long time, like when someone finally understands what they've been trying to figure out for years.
(intransitive) To come into view.
