The Rise Of The Black Kingdom (Kingdom Building)

Oliver was just another Average Joe when he got hit by truck-kun and sent to another world—reincarnated as Dominic Theodore Valentinian Black, prince of the Black Kingdom. However, he quickly learned that it wasn't all fun and games. His kingdom was isolated, impoverished, surrounded by enemies, not to mention a Succession crisis. The kingdom is at risk of collapsing or being conquered. In such an age in such a kingdom, will the kingdom collapse, taking the Young Prince with it, or will he rise to Greater Heights with his new country?  This book focuses more on the rise of a kingdom over singular characters, so there will be frequent chapters mentioning foreign countries that don't seemingly have a direct impact on the protagonist, as this is a book about a world, not a book about a protagonist who feels like the world. I'm also a new author primarily doing this because I can't find any books or web novels that match my particular taste, so I'm writing about it instead. I appreciate feedback, but if it's just a matter of taste, I request you find another book. Part one focuses on war and the political situation of the surrounding region, but you don't necessarily have to read it. If you like, you can just skip to part two. Any necessary information that is available in part one will be provided in part two, so you're not missing anything.