Roman knew the essence of war.
Since ancient times, the essence of war has been the production and delivery capabilities of strategic resources.
There's no need to elaborate on resource input; the transport power of carts and trains is on a different level, as is mobilization.
However, Roman lacked the means to lay tracks or build steam engines. Even if he could, without five or six years of effort, it would still be impossible; moreover, it would require an enormous investment of time and energy.
Roman was keenly aware that his two cities, with a population of over twenty thousand, were still in the agricultural phase, where most people could only farm and build houses and had not yet laid the foundation for entering the early industrial phase.
His ability to stay ahead of nobles and kings of his time was due to military reform, redesigning his governance system, offering advanced technology, and continuously improving per capita productivity.
