The Division 2s control points, territories, and donation system may be one of the more underappreciated aspects of the game. But do not underestimate their value. Understanding how this complex system works goes a long way to understanding the core mechanics that make up The Division 2. It may also serve to the benefit of your agents overall progression in the grand scheme of things.
Source: N4G PC The Division 2 Guide: Control Points and Surrounding Areas