Balance of power.
When one power controls the exports of another is called export control and trade control.
government
Checks and Balance.
An oligarchy is "a government in which power is in the hands of a few."
To keep one branch of government from having more power than another there is a checks and balance system in place.
To control the people
It is known as a totalitarian state.
supremacy, power, strength, rule, prestige, powerhouse, mastery, jurisdiction, government, force, command, control, authorization
Prime Minister
separation of powers.
Mughal