Farming the Soil for Territory: the Rise of the Small Lords

A male primary school teacher who has just started working. He traveled to a parallel world in the cold weapon age of farming, where productivity was still very backward. There is no golden finger, no power or ability that violates common sense in physics, only the memory and common sense of modern people. There is no unified country in this world. The entire continent is dotted with hundreds of countries, large and small, and countless lords under their jurisdiction. The protagonist's travel object is a young lord whose territory is a village with only about 20 households. The protagonist uses modern people's common sense to improve the village's management and system, and improve productivity to develop and expand the village.