Seven Kingdoms

The Seven Kingdoms is a realm located on the continent of Westeros, ruled by the Lord of the Seven Kingdoms, the king who sits on the Iron Throne in the capital city, King's Landing.

Government
For most of their history, the regions of Westeros were independent kingdoms. The number of these kingdoms and their borders have changed many times. Following a successful conquest of all the lands of Westeros south of the Wall but Dorne, and their consolidation under the rule of the Iron Throne, Aegon established his new empire's capital on the spot of his landing, for which it was known as King's Landing.

Houses that Survived the Conquest

 * House Stark chose to submit and was confirmed as overlords over the north.
 * House Arryn submitted and retained the Vale of Arryn.
 * House Lannister was allowed to keep their family holdings after they bent the knee, following defeat at the Field of Fire.
 * House Martell retained its independence for a time.

Houses established by the Conquest

 * House Targaryen obtained dominion over most of Westeros and settled in the Crownlands.
 * House Tully of Riverrun was awarded over-lordship of the riverlands as Lord Paramount of the Trident, for supporting Aegon against Harren.
 * House Greyjoy was granted the Iron Islands after the death of King Harren the Black.
 * House Tyrell was granted over-lordship over the Reach as Lord Paramount of the Mander.
 * House Baratheon married into the Durrandons and was awarded the stormlands as Lord Paramount of the Stormlands, after the defeat of the Storm King Argilac the Arrogant.