Wolf's Run: From Outcast to Beast

P.S. The main storyline focuses on farming and development, followed by colonial expansion. In the early chapters, the protagonist seizes power and takes control of the tribe. There is a lot of worldbuilding, so you can skip straight to Chapter 102.

The invention of pulse rifles profoundly changed the nature of warfare across the continent. With a thunderous boom, Yu Xuan used an ancient divine formation to seize control of the continental bridge and cut off the northern and southern continents. He used this unique geographical advantage to continually absorb the manufacturing techniques for standard spirit-energy weapons from the northern continent. Then he used the advanced weapons he made to conquer the southern continent.