The Migration Period

Late-antique Europe in 450 is modeled as a multilingual political mosaic of the two Roman empires, the Hunnic imperial sphere, Germanic kingdoms, Vandal North Africa, the Sasanian Empire, Caucasian client realms, and many autonomous tribal confederations. The scenario deliberately models the Hunnic ruling core as a Proto-Turkic, Oghuric-leaning steppe elite within a multilingual confederation; Attila is therefore presented as a Proto-Turkic/Oghuric Hunnic ruler in the scenario model, while the historical linguistic and ethnic composition of the Huns remains debated. Tribal names are preferred for northern and eastern frontier identities wherever a sufficiently attested ancient ethnonym can be used. Later labels are avoided or marked as ancestral shorthand where necessary. Hunnic vassalage represents tribute, military obligation, hostage exchange, dynastic bargaining, and political subordination rather than medieval feudal law. Vassals may themselves have subordinate clients or confederated districts. Ancient DNA evidence is incomplete and does not justify assigning a single haplogroup to an ancient tribe.

On 1 December 450, the Eastern Roman court has ended its gold tribute to the Huns. Attila and a multilingual coalition prepare for a western campaign, while Roman emperors, Germanic kingdoms, Caucasian frontier states, steppe peoples, and northern communities weigh tribute, alliance, migration, trade, and war. The outcome of the approaching 451 crisis is not fixed.

demand and taxation fund treasuries; trade, tolls, tribute, rents, ransom, plunder, and customs modify income; armies, garrisons, fleets, fortifications, diplomacy, relief, and reconstruction consume treasury and supplies. Five technology branches develop over time—military metallurgy, mounted warfare, siegecraft, administration and logistics, and maritime construction—and require sustained investment and specialist access. Companies and retinues are contract-based organizations: merchant houses, caravans, mounted retinues, infantry companies, palace guards, ship crews, and raiding bands have their own loyalty, readiness, pay, and access-to-trade conditions. Confederations preserve local territorial identities while sharing an elective common ruler. A vassal may possess subordinate vassals or client districts. When a vassal becomes independent, its cell identity switches from its *_vassal polity key to its corresponding *_independent key, restoring its own cultural color; when it is subordinated again, the gold, purple, red, or Vandal-blue vassal key returns. The Hunnic system uses gold-family colors for Hunnic territory and Hunnic-dependent polities; Northern Roman vassals use Roman-red families; Eastern Roman vassals use imperial-purple families; Vandal dependents use Vandal-blue families. End-of-turn processing recalculates military strength, economic strength, treasury, readiness, faction loyalty, technology, and local war status for every represented political actor. Seasonal winter, river flooding, drought, crop failure, epidemic pressure, and supply disruption act continuously in the background. Historical event pulses include the 451 Gallic campaign and Catalaunian crisis, the 451 Council of Chalcedon, the 452 Italian campaign and Attila–Leo meeting, the 453 death of Attila, and the 454 crisis around the Battle of Nedao. Medieval military orders such as the Knights Templar are absent because they belong to a much later period.