@ Mads, no you are wrong. Azeroth is three things, A kingdom, continent and the world. Azeroth is acutally NOT the dwarves, but all the stuff of dwarves (the continent). It was called this because originally there was no Stranglethorn Vale so all that land was actually part of the Kingdom of Azeroth, and therefore the entire continent was part of the Kingdom as well. This changed when STV was added, and because Blizzard lacked a good name for the world they went with Azeroth. You have your lore mixed up, probably beacuse you play Azeroth Wars which imo is TERRIBLE at lore. Arathor was actually thousands of km's (miles) north of Azeroth (the kingdom/continent) and was basically all of North EK minus Quel'Thalas and trollish lands united together under the Empire of Arathor, which has not existed for thousands of years.
Also Arugal's last name isn't Hellcast, it's mentioned no where in lore, and once again you have used Azeroth War lore for this, I suggest you don't do that anymore, or at least check a source first

Also Arugal belonged to Dalaran as a state, since Shadowfang Keep is not a state, but actually a keep, De Jure part of Gilneas, and officially part of the Kingdom of Lordaeron, now destroyed.
Also yes, Tandred is a King, but his title is "Lord Admiral" that is a King in Kul Tiras basically, just like a king is called a Koning in dutch/german.
Edit: I feel like dropping some questions,
1) This individual found an orc infant during the First War and was the Commander responsible for overseeing the Orcish Internment Camps after the Second War ended:
A) Danath Trollbane
B) Marcus Redpath
C) Aedalas Blackmoore
D) Alidan Perenolde
2) What was the name of the Empire that encompassed most of North Eastern Kingdoms:
A) Lordamere Empire
B) Northern Empire
C) Arathi Empire
D) Arathor Empire
3) Who was responsible for creating the First Alliance of Lordaeron and was also the King of a nation during that period:
A) Terenas Menethil II
B) Varian Wyrnn
C) Anasterian Sunstrider
D) Genn Greymane
4) Who was the Noble that started an uprising due to Genn Greymane's isolationist policies:
A) Garithos
B) Darius Crowly
C) Arugal
D) Vincent Godfrey
5) What was the name of the act that enslaved the orcs and forced them to work in prison camps:
A) Enslavement Act
B) Retribution Act
C) Servitude Act
D) Internment Act
6) Who was the last king of Azeroth before its destruction:
A) Landen Wrynn
B) Adamant Wrynn III
C) Llane Wyrnn
D) Anduin Wyrnn
7) Which High Elf from this list refused to leave the Alliance after the Second War and instead formed an Expeditionary Group to aid them:
A) Sylvanas Winderunner
B) Alleria Winderunner
C) Dar'Khan Drathir
D) Anasterian Sunstrider
8) Which one of these factions was part of Dalaran during the Third War:
A) Sorcerer's League
B) Mage's League
C) Violet Battle-Mages
D) Servants of the Violet Eye
9) Which one of these orcs was NOT a Warchief at some point in time:
A) Blackhand the Destroyer
B) Ner'zhul
C) Grommash Hellscream
D) Orgrim Doomhammer
10) Which one of these characters was not a disguised black dragon:
A) Victor Nefarius
B) Lord Falconcrest
C) Daval Prestor
D) Katrana Prestor