Government.

1 : a regularly interacting or interdependent group of items forming a unified whole <a number system>: as a (1) : a group of interacting bodies under the influence of related forces <a gravitational system> (2) : an assemblage of substances that is in or tends to equilibrium

If there's interaction, there's some sort of system even if it just de facto.

People use knives, rocks, fists, etc. Blaming the weapon is disingenuous.

Read Hobbe's Leviathan and Locke's Treatises.