Consider the concept of adding a nomad population and culture field to each province.
So that a province might have a settled population of Bactian Greeks, but have a nomad population of Huns.
A high nomad population can reduce or replace the settled population over time.
One of the uses of low grade city defenses is to resist the nomad population in an area. Higher settled population restricts nomad population.
One of the factors that could then impact/raise ‘culture’ is having a low nomad population.
Also nomads do not require ‘core’ provinces, so a nomad population could be displaces, like the Goths were, late in the roman period.
Nomadic cultures can still have armies. For example the Hun nomadic population were displaced into SW Russia/Bulgarian area, while their army (acting as an advanced force) attacked/raided into roman territory.
Nomad population migration is probably only slightly under player control, maybe just following armies and moving away from more powerful enemies.
Some terrain allows higher nomad populations then others (i.e. stepps)
This concept applies more to the later Romans directly then the early years, depending on how far the map goes into western Russia. However the stepp nomads were already effecting the empires that the Romans were fighting against (Persians, Bactians, Successor Macedonians) during the earlier periods.
So that a province might have a settled population of Bactian Greeks, but have a nomad population of Huns.
A high nomad population can reduce or replace the settled population over time.
One of the uses of low grade city defenses is to resist the nomad population in an area. Higher settled population restricts nomad population.
One of the factors that could then impact/raise ‘culture’ is having a low nomad population.
Also nomads do not require ‘core’ provinces, so a nomad population could be displaces, like the Goths were, late in the roman period.
Nomadic cultures can still have armies. For example the Hun nomadic population were displaced into SW Russia/Bulgarian area, while their army (acting as an advanced force) attacked/raided into roman territory.
Nomad population migration is probably only slightly under player control, maybe just following armies and moving away from more powerful enemies.
Some terrain allows higher nomad populations then others (i.e. stepps)
This concept applies more to the later Romans directly then the early years, depending on how far the map goes into western Russia. However the stepp nomads were already effecting the empires that the Romans were fighting against (Persians, Bactians, Successor Macedonians) during the earlier periods.