Striving in the Late Sui Dynasty

History, War, and System, Any Era

Recommend anything!

Alternate History, System, and Modern Weapons

After transmigrating, the male lead relies on a System to create modern weapons and conquer the world.

A Country on a Continent Entirely Made Up of Historical Dynasties

Any Tomato Novels About Power Struggles and Nation-Building in Modern Foreign History?

Something like "My Italy", "The Roman Road to Greece", and "The Holy Roman Empire".

Transmigrate Into a Historical Setting: An Assistive System Is Fine, but No Special Forces Protagonists

Absolutely no wars involving nations or ethnic groups. With an app like this, novels that touch on that subject are all awkward to read, unless the author really knows how to build out the story. Niche settings are fine, as long as they're not making things up carelessly.