Players of the Fourth Disaster, Help Me Separatize the Americas

In 1845, California was wild and ownerless, and a year later the Mexican-American War swept across the continent. Su Ze traveled here and was bound to the civilization construction system to summon modern players from the earth. All players only think that they are playing a 100% real hard-core VR game: Veterans built an army, engineering students made steel and guns using ancient methods, infrastructure madmen built cities from the ground, and everyone regarded the Indians, US troops, and Mexican troops as farmable NPCs. Only Su Ze knows that everything here is reality, and falling down means complete death. Players frantically open up wasteland, mine gold mines, manufacture thermal weapons, and sweep across the entire west coast; While Su Ze was cleaning up the troubles caused by the players, he was accumulating strength, introducing Chinese people, checking and balancing the great powers, and establishing a new country of his own in the Americas!