This passage refers to the Peace of Westphalia, but is should be noted that taken out of context it could be referring to several different things within that topic itself.
It would be the "c. Unified Command" system that provides a command structure to enable agencies with different legal, jurisdictional, and
<span>functional responsibilities to coordinate, plan, and interact effectively on scene while maintaining their own authority, responsibility, and accountability, since power is ultimately delegated to different branches in this system. </span>
