This term is most commonly used in the context of the disputed border between India and China.
Here's what it means:
* Line of Actual Control (LAC): The LAC is the de facto border between India and China. It's not officially recognized by either country as a formal border, but it's the area where their armies are deployed and where they claim control over the territory.
Note: There are other meanings of LAC, but this is the most common one in the context of international relations and geopolitics.