use_same_authority_with_liege

use_same_authority_with_liege = {
	OR = {
		government_type = liege.government_type
		trigger_if = {
			limit = { realm_law_use_crown_authority = yes }
			liege = { realm_law_use_crown_authority = yes }
		}
		trigger_else_if = {
			limit = { realm_law_use_tribal_authority = yes }
			liege = { realm_law_use_tribal_authority = yes }
		}
		trigger_else_if = {
			limit = { realm_law_use_imperial_bureaucracy = yes }
			liege = { realm_law_use_imperial_bureaucracy = yes }
		}
		trigger_else_if = {
			limit = { realm_law_use_nomadic_authority = yes }
			liege = { realm_law_use_nomadic_authority = yes }
		}
		trigger_else_if = {
			limit = { realm_law_use_celestial_bureaucracy = yes }
			liege = { realm_law_use_celestial_bureaucracy = yes }
		}
		trigger_else_if = {
			limit = { realm_law_use_meritocratic_bureaucracy = yes }
			liege = { realm_law_use_meritocratic_bureaucracy = yes }
		}
		trigger_else_if = {
			limit = { realm_law_use_japanese_bureaucracy = yes }
			liege = { realm_law_use_japanese_bureaucracy = yes }
		}
		trigger_else_if = {
			limit = { realm_law_use_church_authority = yes }
			liege = { realm_law_use_church_authority = yes }
		}
		trigger_else = {
			always = no
		}
	}
}

As written in game/common/scripted_triggers/00_law_triggers.txt.