How Game of Thrones can help you understand History better

I think Game of Thrones is more than just entertainment, it is definitely very educational too. One can understand politics, power structures and the following concepts really well by watching it:

1. Concept of alliances, allies- give and take
2. Medieval societal structure- feudal system and social hierarchy
3. King’s court and imperial structure- advisors, maester, knights
4. Concept of the hill tribe
5. Marital structures as a way of increasing empire and building alliances- Margarie marrying Joffrey, Merissa marrying the Dorne prince
6. Understanding slavery
7. Understanding wars and conquerence
8. Understanding ancient armies