Kingdom of Helmsdeep
Helmsdeep was a militaristic kingdom founded in 0AC at the start of the Second Era by King Mercenary.
After coming out of the War of Two Kings victorious, Helmsdeep became the dominant force in Minecraftia until the end of the Second Era, when during the Great Grief King Whazajottom of Redstonia stabbed Helmsdeep in the back, destroying most of the kingdom and leading King Mercenary into a trap, killing him.
Helmsdeep during its prosperous period was a nation with a extreme focus on military strength, prohibiting any signs of weakness in either themselves or their allies. This military tradition today still remains in in the Province of Valyria and the Province of the Reach, due to the influences of the former Helmsdeep colony of Marsadini - today known as Lannisport. It was known for massive expansion southwards, building at the time the biggest cities and buildings the world had ever seen, and displaying their wealth in the form of two giant diamond swords in front of the royal palace and throne room. Today this building is used as a headquarters for the Mercenary Bank, but the swords still remain.
To finance this expansion, the Kingdom during its founding used to trade with the Spawnlands - today known as the Riverlands. However, fearing that the influx of wealth would allow Helmsdeep to become the most powerful kingdom in Minecraftia, Kythira set up strict sanctions. This however backfired, leading to Helmsdeep holding raids on the Spawnlands that would only end after the Great Grief destroyed most of the known world.