Realist Builds an Empire

Christopher Bookers is transported to an alternate dimension when on a leisurely trip to a mall, plotted as the succeeding heir to the Yavhel Barony when the heirs begin to attempt to murder each other. Only problem is -- Christopher's favorite game was Rise of Nations, and he still has the Expansionist mindset. Alongside his system that feels like a Tutorial rather than an aide, he shall become a superpower!