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Victoria 3 - Dev Diary #17 - Migration

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Hello and welcome to yet another Victoria 3 dev diary. Today’s topic is Migration (meaning the movement of Pops between states), what role it plays in Victoria 3, and how it functions mechanically. There are two types of Migration in Victoria 3: Intra-Market Migration and Mass Migration, and we’ll be explaining both of these starting with Intra-Market Migration.

Intra-Market Migration is the movement of Pops between two States that are part of the same Market. Barring certain exceptions (such as slaves not being able to migrate, as covered in the previous dev diary), Pops are generally always able to move between States in the Market, though the number of individuals that are able to change their homes on a weekly basis varies based on factors such as the local Infrastructure and Market Access in the two States.

Which Pops migrate from and to what States depends on the Migration Attraction of each State. Migration Attraction is a value that is based on the average Standard of Living in the state, and modified by various factors such as over/underpopulation, unemployment/available jobs and so on. It is possible for a country to directly encourage Migration to a specific state through the ‘Greener Grass Campaign’ Decree, at the cost of some Authority. In general, Pops will move from States with a low standard of living and a lack of employment opportunities to states with a high standard of living and jobs to offer. States with a low population compared to the amount of available land are especially attractive to economic immigrants.

Kansas, already an attractive state for American settlers due to its sparse population, has been further prioritized for migration through the use of a Greener Grass Campaign decree
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Discrimination, too, plays a role in migration. Pops that are being discriminated against in a particular State, and have the opportunity to migrate to another State in that market where they would not be discriminated against (perhaps because of multiple countries sharing the same Market, and one of those countries having more liberal citizenship or religious laws) will take that opportunity in greater numbers, provided of course that there is an underlying economic reason for them to want to move there in the first place. After all, while enjoying voting rights is certainly nice, putting food on the table is higher on the agenda for most Pops.

Discrimination can also have the opposite effect: Pops that are already enjoying full citizen rights are generally going to need to be in pretty dire economic straits to consider moving somewhere where those rights are going to be taken away, and in the case of a Pop that is going to be discriminated against no matter where they go in the Market, they tend to stick to their cultural Homelands.

French colonial settlement policies means that their colony of Algiers receives a steady trickle of immigrants from mainland France every week
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So, what then of Mass Migration? Mass Migration is a mechanic introduced to try and model the migration of large amounts of people to places such as the US, Brazil and Australia in the 19th century. Mass Migration can happen when a particular culture experiences Turmoil, which is a product of having a large number of radicalized pops. A culture that has enough Turmoil to meet the threshold has a chance to create a Migration Target somewhere in the world, which is a flag set on a particular State that attracts huge numbers of migrants from that culture over the course of a limited timespan to that State and any States neighboring it.
Migration Targets are more likely to be created if the Pops in the culture have a low Standard of Living and high Literacy, and particularly likely to be created if there is widespread starvation among the Pops of that culture.

The selection of States for Migration Targets is based on a number of factors, including the state’s Migration Attraction, whether or not the culture is legally discriminated against in the country, and if there is a logical ‘path’ that Pops of the migrating culture would be able to follow from their Homelands to the target (such as trade routes). There is no inherent advantage in certain country ‘tags’ for who gets migrants - the US tends to get migrations because of availability of jobs and land combined with liberal citizenship laws, not because they have a built-in migration attraction bonus.

Fed up with economic hardship and political oppression in their homelands, a large group of Polish people have decided to try their luck at a new life in France
image3.png

There is one more aspect of migration that we’re only going to briefly touch on: Migration Policy. This is a group of Laws which lets you set the stance of your country on migration. For example, whether you want to promote the movement of people from your core lands to your colonies, attract skilled workers from other countries for your manufacturing economy, or even just minimize all migration (external and internal) as a way of maintaining your iron grip over the population. The reason we won’t be going into this today is because it’s currently in the process of being redesigned to this end (from a previous, much simpler set of laws). We’ll try to return to it at a later time!

With that said, we’ve reached the end of this dev diary, and in fact, the end of the current string of politics dev diaries, as next we’ll be changing our focus from inwards to outwards and talking about Diplomacy, on the topic of Prestige and Rank!
 
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This comment is reserved by the Community Team for gathering Dev Responses in, for ease of reading.

Timewalker102 said:
Is "Sparsely Populated" in that Kansas screenshot generated dynamically? I.e does the game divide POP size by the actual land area of the state to determine a population density?
Yes, it's based on proportion of population vs Arable Land.

Metz said:
Is it possible for mass migration to change the base culture/religion of a developing country? Can a devastating war in the Italian peninsula make it so that for example Argentina becomes an Italian country on paper (culturally)?
No, countries have fixed primary culture (one or several) and this does not change other than if the country's definition changes (e.g. through forming a new nation). More context here.

Discrimination law effects are measured against the primary cultures, so a large population of non-primary culture immigrants may demand equal treatment or pack up and move elsewhere, or even demand self-governance under certain conditions.

Alfred Dreyfus said:
Will a shared language make it more likely for a POPs to migrate there?

For example, Spaniards to Mexico, British to the USA, Portuguese to Brazil, etc.
We still haven't done our final pass on all the factors that play into creating Mass Migration Targets, shared cultural traits (like language) is one aspect we're looking at.

Illicitline45 said:
How will culture work with pops that have migrated? Will they overtime convert to the local culture? Will they create an hybrid? Will they maintain the old culture? what about cultural obsessions, how will they work oversees?
Cultural Assimilation and Religious Conversion are separate mechanics which we'll cover in a later DD, but these will often come into play after a migration wave.
For as long as a Pop retains their original culture, they will also be subject to that culture's consumption habits.

Swirly Mango said:
Mass Migration is based on cultures, not POP's? Can turmoil in Russian Poland cause a Mass Migration for the Polish Pops in Austria with 60 Standard of Living that are all Loyalists as well?
It's based on cultures yes, just because the Migration Target exists doesn't mean that all Pops of that culture will automatically be pulled toward it. The well-to-do Pops won't be interested in moving, even if the presence of the Migration Target means they technically could.

SignedName said:
Does the "average standard of living" basis for pop migration apply to a general standard of living, or on the basis of pop professions? Because I could envision a scenario where there are extremely wealthy pops that would raise the balance, but other pops being worse off.
If there are enough wealthy Pops to markedly increase the average, then the immigrant will be hearing about the glorious country overseas where the streets are paved with gold, scrape together enough to embark to this promised land, but perhaps find themselves stuck due to poor social mobility once they get there. Sucks for them, but not unrealistic!

DSet said:
I'd also like to know how war will effect migration. For example, if the american civil war is much longer and more destructive than in real life, it would make sense for some of the more recent immigrants to decide maybe this freedom thing aint so great after all and go back to their home countries.
War can have a number of deleterious effects on a society simply due to emergent mechanics affecting the Pops. We will learn more about this in later DDs. This means that prolonged wars definitely can cause migration waves away from the war-torn country, or perhaps just shift the population away from the worst affected region to other parts of the market.

Constantijn2 said:
1. You said there's a chance a Migration Target will be created. So let's say two states have the potential to become a MT and they have the exact same Migration Attraction and other factors are also the same. The chance will then be 50/50 on which of them becomes the MT?

2. So then if they differ slightly and one is more attractive. Will in that case the most attractive state definitely become the MT or is there still a chance the other state will become the target?
It's determined by a weighted random, so if one is more attractive it might have a 55% chance vs 45% chance of being selected.

Kaspar Osraige said:
Could some of these migration targets be result of events or decisions?
Yes, Migration Targets can be created via scripted effects through e.g. Events.

A couple of general answers:

Anything pertaining to encouraging or discouraging certain kinds of migration will be dealt with via the as-yet-unfinished Migration Policy Laws.

When I mentioned a cultural minority might "demand self-governance" under certain conditions I'm referring to the Secession mechanics, which we will talk about in the future.

There is no direct interaction with Pops in Victoria 3, all interaction are through other mediums like Buildings, Interest Groups, Decrees, Institutions etcetera. Similarly there are no direct interactions with cultures or religions, for example you're not able to ban or encourage migration of Pops of a specific culture. All such interaction is handled through the Citizenship and Church & State Laws, which determine if a Pop is Discriminated due to culture and/or religion. It's the distinction between non-Discriminated and Discriminated Pops that determine how specific policies work, rather than selecting a specific policy for a specific kind of person. Not denying that happened on occasion, but it's certainly less common and not the level of granularity we want the game to operate on.

We've considered and experimented with adjacency-based migration in the past, but ended up deciding not to have 3 distinct systems for migration in the game. Economic migration (poor Pops moving to where the jobs are) is handled via market migration. Turmoil-based migration (destitute or oppressed Pops moving abroad) is handled via mass migration. While cross-border migration as well as a steady trickle of global migrants are certainly not ahistorical, it is irrelevant for a player when the effect is very low and difficult to explain or do something about when it's already very high. Economic migration is usually something a player is happy for and can control to some degree with Decrees, while Mass Migration is easier to signal and explain to the player and can be controlled with Laws. The effects of other forms of migration are also less relevant to model and would result in a lot of Pop fracturing (and performance problems) for no major discernible benefit.

peterson72 said:
There should either be multiple migration targets at a time or a quick rotation of MTs of one culture, because it didn't happen that people of one culture emigrated to a single place over more than a few months.
There can be several simultaneous Migration Targets for a given culture, depending on how high that culture's Turmoil is.

peterson72 said:
Are we only gonna get the starving ones? In the 19th century, lots of well to do people have emigrated like British engineers and German activists, is there going to be a mechanism that represents these minor flows of elite migrants?
They will migrate if they see a benefit in doing so, either economic or political. So it depends on how relatively attractive the target country is to them.

Cora Giantkiller said:
So if I'm an autonomous subject (Norway/Finland/Cuba/etc), I might want to make myself a very attractive economic/political place to live to attract the working class from elsewhere in the market, thus building myself up at the expense of my liege?
Yes one of the benefits of being in another countries market :)

Xain said:
So, no dynamic culture, no way of finely managing cultures (a la imperator/Stellaris) other that a primary vs others binary? That is the most disappointing post I've read so far...
Discrimination Laws are a bit more granular than just "primary vs others" and together with the two discrimination vectors (culture + religion) can create quite a bit of detail. Being able to effectively target your "culture management" with a finer legal instrument than that is both unrealistic and not particularly meaningful in terms of what it adds to the gameplay.

Having said that, it's well worth noting that our decision to make Primary Culture(s) static to the country tag is very intentional. In addition to being set in the revolutionary era, Victoria 3 is also set in the era of nationalism and the notion that culture = country, "natural" cultural homelands, pan-national sentiments, and so on are important themes. So in Victoria 3, culture and country are intrinsically connected as it would be nonsensical in this era for a nation-state to change its primary cultures while still retaining its fundamental national identity.

Cassilda said:
Can Mass Migration be triggered by less dramatic circumstances than starvation? Italy during the second half of the 19th century experienced a very significative emigration toward America, yet, despite widespread poverty, it wasn't so dramatic like the famine in Ireland.
Mass Migration is triggered by average Turmoil in a culture, and Turmoil in turn comes from Radicalism and Discrimination. Radicalism gets particularly high in Pops that are starving, but for example if most Pops of a certain culture used to be really well off but then became oppressed and a lot poorer in their current country / countries, this could cause a Migration Target for them to go elsewhere as well.

Lorehead said:
Can migration cause a backlash at the destination? Or will this generally not happen, because they’ll probably pick someplace with plenty of job openings?
I know I sound like a broken record, but this emerges from the simulation!

Backlash isn't something created by the migration itself but rather emerging from the effects of that migration. If the people moving have a lot of Radicals, as they're prone to have since Mass Migration is triggered by high average Turmoil in the culture, this will impact the state they're moving to and by extension also the other Pops who live there. If the moving Pops become non-Discriminated in the process and perhaps are able to fill job opportunities that increase their Standard of Living, this Turmoil will dissipate quite rapidly and is unlikely to cause long-term problems. But if the immigrating Pops continue to be oppressed and can't improve their living conditions in their new country, this could become a problem for everybody.

Getting a little more granular about it, a major influx of potential labor with low expectations can also depress wages by making it unnecessary for profitable buildings to raise their wage rates to increase their attractiveness. This could aggravate stratification of the owner/shareholder classes and the working classes in the state, creating Radicals among the local population. But on the other hand, this additional labor might be exactly what is needed to expand production of local staple goods, making it cheaper to satisfy those needs. So while migration waves will always have a substantial effect on your economy and therefore politics, the precise effect it will have all comes down to the details and how you choose to deal with it.
 
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Is it possible for mass migration to change the base culture/religion of a developing country? Can a devastating war in the Italian peninsula make it so that for example Argentina becomes an Italian country on paper (culturally)?
 
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Hello and welcome to yet another Victoria 3 dev diary. Today’s topic is Migration (meaning the movement of Pops between states), what role it plays in Victoria 3, and how it functions mechanically. There are two types of Migration in Victoria 3: Intra-Market Migration and Mass Migration, and we’ll be explaining both of these starting with Intra-Market Migration.

Intra-Market Migration is the movement of Pops between two States that are part of the same Market. Barring certain exceptions (such as slaves not being able to migrate, as covered in the previous dev diary), Pops are generally always able to move between States in the Market, though the number of individuals that are able to change their homes on a weekly basis varies based on factors such as the local Infrastructure and Market Access in the two States.

Which Pops migrate from and to what States depends on the Migration Attraction of each State. Migration Attraction is a value that is based on the average Standard of Living in the state, and modified by various factors such as over/underpopulation, unemployment/available jobs and so on. It is possible for a country to directly encourage Migration to a specific state through the ‘Greener Grass Campaign’ Decree, at the cost of some Authority. In general, Pops will move from States with a low standard of living and a lack of employment opportunities to states with a high standard of living and jobs to offer. States with a low population compared to the amount of available land are especially attractive to economic immigrants.

Kansas, already an attractive state for American settlers due to its sparse population, has been further prioritized for migration through the use of a Greener Grass Campaign decree
View attachment 760983
Discrimination, too, plays a role in migration. Pops that are being discriminated against in a particular State, and have the opportunity to migrate to another State in that market where they would not be discriminated against (perhaps because of multiple countries sharing the same Market, and one of those countries having more liberal citizenship or religious laws) will take that opportunity in greater numbers, provided of course that there is an underlying economic reason for them to want to move there in the first place. After all, while enjoying voting rights is certainly nice, putting food on the table is higher on the agenda for most Pops.

Discrimination can also have the opposite effect: Pops that are already enjoying full citizen rights are generally going to need to be in pretty dire economic straits to consider moving somewhere where those rights are going to be taken away, and in the case of a Pop that is going to be discriminated against no matter where they go in the Market, they tend to stick to their cultural Homelands.

French colonial settlement policies means that their colony of Algiers receives a steady trickle of immigrants from mainland France every week
View attachment 760985
So, what then of Mass Migration? Mass Migration is a mechanic introduced to try and model the migration of large amounts of people to places such as the US, Brazil and Australia in the 19th century. Mass Migration can happen when a particular culture experiences Turmoil, which is a product of having a large number of radicalized pops. A culture that has enough Turmoil to meet the threshold has a chance to create a Migration Target somewhere in the world, which is a flag set on a particular State that attracts huge numbers of migrants from that culture over the course of a limited timespan to that State and any States neighboring it.
Migration Targets are more likely to be created if the Pops in the culture have a low Standard of Living and high Literacy, and particularly likely to be created if there is widespread starvation among the Pops of that culture.

The selection of States for Migration Targets is based on a number of factors, including the state’s Migration Attraction, whether or not the culture is legally discriminated against in the country, and if there is a logical ‘path’ that Pops of the migrating culture would be able to follow from their Homelands to the target (such as trade routes). There is no inherent advantage in certain country ‘tags’ for who gets migrants - the US tends to get migrations because of availability of jobs and land combined with liberal citizenship laws, not because they have a built-in migration attraction bonus.

Fed up with economic hardship and political oppression in their homelands, a large group of Polish people have decided to try their luck at a new life in France
View attachment 760986
There is one more aspect of migration that we’re only going to briefly touch on: Migration Policy. This is a group of Laws which lets you set the stance of your country on migration. For example, whether you want to promote the movement of people from your core lands to your colonies, attract skilled workers from other countries for your manufacturing economy, or even just minimize all migration (external and internal) as a way of maintaining your iron grip over the population. The reason we won’t be going into this today is because it’s currently in the process of being redesigned to this end (from a previous, much simpler set of laws). We’ll try to return to it at a later time!

With that said, we’ve reached the end of this dev diary, and in fact, the end of the current string of politics dev diaries, as next we’ll be changing our focus from inwards to outwards and talking about Diplomacy, on the topic of Prestige and Rank!
Its great that population can migrate within a market to avoid discrimination - but can it happen between different markets? Historical example would be Circassian migration to Ottoman Empire from Russia. If a neighbour discriminates one population (for example because of religion) is it possible for me to encourage this population to migrate to my country even if we dont share market with that country where they currently are?
 
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Is there Land ammounts included in different states to influence how many pops can become landowners? I think one migration trigger would be some states will giveaway land to get more pops.
 
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Is "Sparsely Populated" in that Kansas screenshot generated dynamically? I.e does the game divide POP size by the actual land area of the state to determine a population density?
Yes, it's based on proportion of population vs Arable Land.
 
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Would it be possible to incentivize certain ethnic/religious groups to migrate to a particular state of your country and not to others, in order to consolidate them there?
 
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Does the way mass migration works mean that having a single state split into 2 with the same conditions (but obviously half the population and area) would double your chance of being a target of a migration wave? So countries with lots of states just arbitrarily get a bonus even if conditions in each state are the same?
 
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Interesting. While I appreciate the relative flexibility/systems based approach (as opposed to the rigid "New World gets ALL the immigration" approach in V2) I do feel that more granularity might be required to deal with colonies and spheres of interest. While there was certainly some migration both ways for e.g. the British Empire, something like Cuba or Nicaragua seeing mass migration in this period wasn't really on the table, despite them being glorified US protectorates by the latter end of the period.

Will it be possible to influence migration based on particular factors such as religon or nationality, or set certain states/vassals as being less or more likely to be affected by immigration?
 
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Very exciting DD!

The intra-market migration looks nice, how does this impact immigration for independent nations that share a market?

Also wrt Mass migration
Migration Targets are more likely to be created if the Pops in the culture have a low Standard of Living and high Literacy, and particularly likely to be created if there is widespread starvation among the Pops of that culture.
Does this imply that you can attempt to block discriminated pops from migrating out if you keep their literacy low?
 
Can a country create policies to deliberately attract mass migration ? Brazil, for instance, in this time period subsidized European migration to make up for the loss of slave labor.
 
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Will pops be able to mass migrate to colonies of other nations?. E.g mass amounts of Chinese labourers moving to Australia after the gold rush. Or alternatively, American whalers in Tasmania?
 
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I'm surprised you're modelling migration policy as a set of Laws; I thought it'd be based on edicts (or whatever they're called) that used your Authority.
 
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How will culture work with pops that have migrated? Will they overtime convert to the local culture? Will they create an hybrid? Will they maintain the old culture? what about cultural obsessions, how will they work oversees?
 
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