Reincarnated to a Fantasy Kingdom and Forcing Them to Modernize by Any Means Necessary!

When a man is killed abruptly he is reincarnated to the fantasy world of his dreams, except this world accurately reflects what a real medival world is like, except several thousand times worse.  Imagine no indoor plumbing combined with goblins and orcs.   He discovers that he has been granted the useless skill of appraisal and is abandoned by the kingdom that summoned him! Little does this world know he is well versed in the economics and institutional politics and will bring its extractive stupid political system to collapse.