The answer is D, ur welcome
I believe that the system that is being spoken of is imperialism.
Imperialism is a nations desire to claim territory through economic control through both diplomatic and violent tactics. Although militarism has a very similar definition, it only relies on military control and not any diplomatic influence.
I hope this is what you’re looking for :)
<span>withdraw formally from membership in a federal union, an alliance, or a political or religious organization.</span>