One thing that has struck Crutal Kingdom at a bad term, is the lack of gold the Kingdom faced thanks to the Castle exploding. The entire royal treasury is gone, which was used to pay employees and enhance on new business opportunities.
You would ask how much gold was lost in that explosion, well considering the expenses made to crumble the Snow Ignite Revolution in to dust which took about 30 million Gold Coins from the budget here in the Grand Capital, yes 30 million!
About 100 million Gold Coins remained in the royal treasury but got blown in to bits! You would ask how a little Kingdom carrying only 3,000 inhabitants, would attain so much fortune comparable with a Doman who has 100,000 people living in it.
I would ask that question as well! The 10% pure income became the Kingdom's greatest upper advantage. Because when piled up, this profit equaled 300,000 Gold Coins each month. At least that was the profit before all of the Snow Ignite trouble they've experienced.