Reincarnated Slime: Become a Lord at the Beginning

A guy who lived for three lifetimes brought the newly appointed sage to the different world he was looking forward to, and by chance he became a lord. In this different world, what kind of myth will He create? Become an "ordinary" lord whose name will be recorded in history? A reformer who brought the magical world to an "industrial revolution"? Or is he the leader who will unify the continent? These are all too unfashionable, of course we need salty fish to develop (no) In short, nothing is certain... Setting: "Light novel", "Non-double novel", "Protagonist's IQ is online" "No heroine" (The first work, and also the work that the author has poured his heart into) The introduction is weak, so please read the book and take a look.