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The Barbarian Migration is a new game mechanic that allows Barbarianbarbarian tribes to migrate into lands conquered from either Rome Rome, West Rome West Rome, Byzantium Byzantium or Gallia Gallia.

To start, the country must take a Execute decisiondecision, "Great Migration". During the war declared this way, any province occupied gets automatically annexed and cored if the Barbarian manages to keep it for at least 6 months.

When the war ends, the "Old Homeland Abandoned" event will happen in MTTH of 60 months to the Barbarian tribe. This event gives your previously conquered territory to the nation with the primary culture of the province. If it can't then it will give it to a random neighbour. If none of the above apply the province will go to a nation with the Barbarian Tribe government.

Great Migration decisionEdit

Potential requirements

  • Is Government monarchyBarbarian tribe
  • Don't have "Barbarian Migration" modifier

Requirements

  • Military tech level at least 15
  • Has at least 100 administrative power
  • Is not a subject nation
  • Is at peace
  • Is neighbour and hasn't truce or alliance with Rome Rome, West Rome West Rome, Byzantium Byzantium or Gallia Gallia

Upon enactment

  • Gain 20 Prestigeprestige
  • Lose 100 administrative power
  • Gain Barbarian Migration modifier for 3650 days:
    • National manpower modifier: +50%
    • Land forcelimit modifier: +50%
    • Land maintenance modifier: -20%
    • Land morale: +30%
  • If:
    • neighbour of Rome Rome and hasn't truce or alliance with it, declares war on Rome Rome
    • isn't neighbour of Rome Rome or is allied or have truce with it AND is neighbour of West Rome West Rome and hasn't truce or alliance with the latter, declare war on West Rome West Rome
    • isn't neighbour of Rome Rome or is allied or have truce with it, isn't neighbour of West Rome West Rome or is allied or have truce with it AND is neighbour of Byzantium Byzantium and hasn't truce or alliance with the latter, declare war on Byzantium Byzantium
    • isn't neighbour of Rome Rome or is allied or have truce with it, isn't neighbour of West Rome West Rome or is allied or have truce with it, isn't neighbour of Byzantium Byzantium or is allied or have truce with it AND is neighbour of Gallia Gallia and hasn't truce or alliance with the latter, declare war on Gallia Gallia
  • Any owned province gets Barbarian Homeland modifier forever
  • A random owned province gets 8 thousand infantry troops

Old Homeland eventEdit

Triggers

  • Has province modifier "Barbarian homeland"
  • Owner is at peace

Option A

  • The province lose "Barbarian homeland" modifier
  • Province owner gets country flag "Succesful migration"
  • If province owner has at least 9 cities, add 10 administrative power, 10 diplomatic power and 10 military power
  • If province owner hasn't "Recent migration" modifier, add "Recent migration" modifier for 3650 days
  • If province owner has at least 9 cities:
    • The province has Pommeranian culture and Pomerania Pomerania doesn't exist, the province is cedeed to Pomerania Pomerania, loses original core and gains province flag "Barbarian province ceded"
    • The province has Hannoverian culture and Angles Angles doesn't exist, the province is cedeed to Angles Angles, loses original core and gains province flag "Barbarian province ceded"
    • The province has Hessian culture and Hermunduri Hermunduri doesn't exist, the province is cedeed to Hermunduri Hermunduri, loses original core and gains province flag "Barbarian province ceded"
    • The province has Saxon culture and Saxony Saxony doesn't exist, the province is cedeed to Saxony Saxony, loses original core and gains province flag "Barbarian province ceded"
    • The province has Franconian culture and Thuringia Thuringia doesn't exist, the province is cedeed to Thuringia Thuringia, loses original core and gains province flag "Barbarian province ceded"
    • The province has Swabian culture and Suebi Suebi doesn't exist, the province is cedeed to Suebi Suebi, loses original core and gains province flag "Barbarian province ceded"
    • The province has Bavarian culture and Marcomanni Marcomanni doesn't exist, the province is cedeed to Marcomanni Marcomanni, loses original core and gains province flag "Barbarian province ceded"
    • The province has Austrian culture and Quadi Quadi doesn't exist, the province is cedeed to Quadi Quadi, loses original core and gains province flag "Barbarian province ceded"
    • The province has Dutch culture and Frisia Frisia doesn't exist, the province is cedeed to Frisia Frisia, loses original core and gains province flag "Barbarian province ceded"
    • The province has Gothic culture and Goths Goths doesn't exist, the province is cedeed to Goths Goths, loses original core and gains province flag "Barbarian province ceded"
    • The province has Gepid culture and Gepids Gepids doesn't exist, the province is cedeed to Gepids Gepids, loses original core and gains province flag "Barbarian province ceded"
    • The province has Vandal culture and Vandals Vandals doesn't exist, the province is cedeed to Vandals Vandals, loses original core and gains province flag "Barbarian province ceded"
    • The province has Langobardi culture and Lombardy Lombardy doesn't exist, the province is cedeed to Lombardy Lombardy, loses original core and gains province flag "Barbarian province ceded"
    • The province has Burgundione culture and Burgundy Burgundy doesn't exist, the province is cedeed to Burgundy Burgundy, loses original core and gains province flag "Barbarian province ceded"
    • The province has Frankish culture and Francia Francia doesn't exist, the province is cedeed to Francia Francia, loses original core and gains province flag "Barbarian province ceded"
    • If none of the above, hasn't province flag "Barbarian province ceded" and any neighbour province isn't owned by country or by Rome Rome, West Rome West Rome, Byzantium Byzantium or Gallia Gallia, owner loses core and is ceeded to a random neighbour country that isn't the country itself, Rome Rome, West Rome West Rome, Byzantium Byzantium or Gallia Gallia. Also, the province gains "Barbarian province ceded"
    • If not even the above one but there's any Barbarian tribe that doesn't own the province, the owner lose core on the province and cedes it to a Barbarian tribe that gains core on it. The province also gain the Barbarian province ceded modifier.

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