So I've seen a lot of discussions around the last season, and they deal with a lot of questions that weren't answered in the last episode. But what's bothering me the most is the lack of details regarding the political system of Westeros. Maybe, I missed something during the show but what are Seven (Six now) Kingdoms at all? What power does the king in King's Landing have? Does it really make sense to fight for the throne this hard? And what's more important - what has its political system become now? It's not a republic since only a few people choose the king, yet it's not a monarchy anymore since the king was chosen. Any ideas?