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Duchy rankBrunswick
Primary culture
Lower Saxon (Germanic)

Capital province
Brunswick (57)

Feudal Nobility Government monarchy.png

State religion

Technology group
WesternWestern technology group
Brunswicker ideas
Ambox outdated info.png Please help with verifying or updating this infobox. It was last verified for version 1.33.

Traditions.png Traditions:

−1% Prestige decay
+1 Diplomatic relation

Diplomatic reputation.png The Welfian Dynasty

+1 Diplomatic reputation

State maintenance.png Niedersächsicher Reichskreis

−15% State maintenance

Construction cost.png Residenzstadt Wolfenbüttel

−10% Construction cost

Idea cost.png Herzog August Library

−10% Idea cost

Goods produced modifier.png Brunswicker Guilds

+10% Goods produced modifier

Institution spread.png Leibnitz and Lessing

+15% Institution spread

Discipline.png The Black Brunswickers

+5% Discipline

Idea bonus.png Ambition:

−5% Land maintenance modifier

Brunswick is a small, landlocked country in the North Germany region. Brunswick starts the game as a member of the Holy Roman Empire (HRE) and shares borders with multiple countries, including three HRE ElectorsFlag of Brandenburg Brandenburg, Flag of Cologne Cologne and Flag of Saxony Saxony.

Missions[edit | edit source]

Main article: Lower Saxon missions

Events[edit | edit source]

The following event can fire for all countries which own the required provinces.[1]


Msg event.pngLeibniz

Gottfried Wilhelm Leibniz was a German philosopher, mathematician and political adviser important, both as a metaphysician and as a logician, and distinguished also for his independent invention of the differential and integral calculus. Born in Leipzig in 1646 he eventually ended up in the service of John Frederick the duke of Braunschweig-Lüneburg.

This event happens only once during a campaign.
Trigger conditions

The country:

  • owns one of the following provinces:
    • Leipzig (62)
    • Erfurt (63)
    • Nürnberg (67)
    • Hanover (1758)

The advisor ‘Gottfried Leibniz’:

  • is not currently employed.
  • is not available.

It is at least 1676 but before 1716.

Mean time to happen

120 months

Event button 547.png

The country:

  • gets access to the discounted Saxon Advisor Philosopher.png (level 3) philosopher named ‘Gottfried Wilhelm Leibniz’.
  • gains Innovativeness.png1 innovativeness.

Decisions[edit | edit source]

Brunswick can form Flag of Hannover Hannover and Flag of Germany Germany.


Execute decision.pngForm Hanover

Now that we control the key provinces of this region, local nobles have no other choice but to accept our leadership. When they fall in line, the united duchy of Hanover will become the leading power of the region.

Potential requirements

Flag of Hanover Hanover does not exist.
The country:

If the country is AI-controlled, it:

  • is not a custom nation.
  • is not a former colonial nation.
  • owns core provinces Lüneburg and Hanover.

Playing with normal or historical nations.


The country:


The country:

  • becomes Flag of Hanover Hanover.
  • gains Yearly prestige.png 25 prestige.
  • gets new Mission.png missions.
  • gets the Msg event.png event ‘New Traditions & Ambitions’, unless it is a custom nation.
  • increases rank to Kingdom rank kingdom, if:
    • it is a Duchy rank duchy
    • it is an elector of the Holy Roman Empire or is not a member.
  • gets permanent claims on all unowned provinces in:
    • North Germany region with Culture icon.png Lower Saxon culture
    • Braunschweig area
    • Weser area.
  • gets “Increased Centralization” for Time Icon.png 20 years, giving:
    • Autonomy.png −0.05 monthly autonomy change,
    • National unrest.png +1 national unrest.

If Hanover (1758) is part of the HRE, but its owner is not a member then:

  • the province is removed from the HRE.
  • the Holy Roman Emperor:
    • gets the opinion modifier “Removed provinces from the Empire” towards the owner, worth Opinion.png−50 opinion with a yearly decay of 1.
    • loses Imperial authority.png1 imperial authority.

Hanover (1758):

  • becomes the new capital of the owner country.
  • gains Base tax.png 1 base tax.

AI will always take this decision

Execute decision.pngForm German Nation

Regardless of the absence of a strong, central authority, our nation is prospering. The Hanseatic League, formed by hundreds of towns in northern Germany, has contributed to the prosperity of our nation. Intellectual growth, combined with sea and overland trading, has also helped spur the development and transform our country into a wealthy manufacturing center.

Potential requirements

Flag of Germany Germany does not exist.
The country:

If the country is AI-controlled then it:

Playing with normal or historical nations.


The country:


The country:

The Imperial authority.png emperor of the HRE:

AI will always take this decision unless it is Flag of Austria Austria

Strategy[edit | edit source]

Strategy The below is one of many player suggested strategies for Brunswick. Bear in mind, due to the dynamic nature of the game, it may unfold differently for other players.

Diplomacy[edit | edit source]

Typically, Brunswick starts the game with Bohemia as a rival. Since being on an Elector's bad side tends to lead to problems, securing immediate allies is vital to staving off early aggression. Flag of Saxony Saxony is an excellent candidate to befriend, as they are not only an elector but can provide a decent (though not impregnable) military buffer against the likes of Brandenburg and Flag of Bohemia Bohemia. Outside the HRE, few options for diplomatic allies exist initially. With some time and effort, nations like Flag of Denmark Denmark and Flag of Brittany Brittany can be convinced into becoming formidable friends.

Smaller nations like Flag of Magdeburg Magdeburg and Flag of Anhalt Anhalt can be allied with a view to later becoming a vassal, though tying Brunswick to the fates of one-province minors (OPMs) does run the risk of dragging the player into wars they would rather not fight — an expansionist Flag of Poland Poland/Flag of Commonwealth Commonwealth, for example.

As a member of the HRE, currying favour with the Emperor (Flag of Austria Austria in 1444) is never a bad idea. Staying in the Emperor's good graces means the player is more likely to have their territory returned should it be conquered and, should one be so lucky, be granted the title of Elector should a seat open up. Similarly, cozying up to as many Electors as possible gives Brunswick a shot at ascending to the Imperial throne, which carries a not insignificant amount of benefits and responsibilities.

Expansion[edit | edit source]

With no ports at the game's start in 1444, Brunswick's focus is initially set solely on European expansion in the heart of the HRE. This carries with it a fairly sizeable caveat: most, if not all, of the nearby territory will be protected by the Emperor. There are notable exceptions -- OPM Flag of East Frisia East Frisia, for example -- but these are few and far between. Thus, taking territory and avoiding the demands to return it requires tact, not just brute force.

Conquest[edit | edit source]

A convenient quirk of Imperial diplomacy forbids the Emperor from actually sending the demand to return unlawful territory while the target is at war. This can be exploited by a crafty player through chaining wars together. In effect, before sending a peace offer for the current war, the player starts a second war. This means war will technically never be over for the player even after the peace deal is signed, meaning conquered territory can be cored and thus considered legal to own under Imperial law.

The downside to this is that, eventually, war must end. Even the most skilled general or charismatic diplomat must rest to allow manpower levels to recover and war exhaustion to fade. In such a weakened state, an overextended country is vulnerable to decisive counter-attacks that may mean the loss of conquered territory anyway, and perhaps more. Aggressive expansion (AE) penalties must also be closely monitored to prevent a sizable coalition from enacting swift revenge.

Vassalization[edit | edit source]

Instead of outright conquest, other countries can be turned into vassals even while members of the HRE (albeit after overcoming a -25 penalty). This avoids the unlawful territory issue while still allowing the player to benefit from a boost in revenue and fielded troops. Unfortunately, the steep penalty to vassalize an HRE nation often means a purely diplomatic solution may be difficult or impossible. A more direct method is forced vassalization through conquest, which achieves the same result assuming the war isn't fraught with opposing alliances. Regardless of which vassalization method is used, prime targets include Flag of Verden Verden, Flag of Oldenburg Oldenburg and Flag of Hesse Hesse.

Once a country is made Brunswick's vassal, diplomatic annexing can be done after a ten-year wait. This carries the usual penalty to diplomatic reputation, plus an additional penalty for annexing an HRE member. However, this is not considered unlawful acquisition of territory. If Brunswick is popular enough to afford to be hated, a slow, methodical absorption of nearby countries means Brunswick can grow in size without contravening Imperial law.

Personal union[edit | edit source]

Similar to creating vassals, gaining personal unions (PUs) over other countries allows Brunswick to effectively increase its reach without drawing the Emperor's ire. Since many HRE nations lack heirs to start the game (as indicated by the "Disputed Succession" alert), royal marriages can pay dividends for the player should a foreign leader meet an untimely end. In the early game, neighbours like Saxony and Flag of Lüneburg Lüneburg are prime targets for PUs.

The trade-off for PUs versus vassals is that the integration timer is much longer for PUs — fifty years instead of ten. This, while the up-front diplomatic effort is minimal, the end result means a diplomatic relation slot will be tied up longer while the annexation timer ticks down. Furthermore, PUs are only possible with Christian monarchies. Brunswick neighbour Flag of Münster Münster, for example, is a theocracy and does not allow royal marriages; thus, they can never be brought under a union.

Achievements[edit | edit source]

Electable! icon
Become an elector in the HRE as a country which does not start as elector.
An early Reich icon
Form Germany.

Footnotes[edit | edit source]

  1. The script code of the event can be found in /Europa Universalis IV/events/flavorHAN.txt.
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