Idea groups

I have heard that idea groups are getting reformed in M&T 2.0. Because of that, please don't expand this article.

Number of idea groups increase by 1 at the following administrative tech levels:

• 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56

Administrative groups

Administrative

Prerequisites

No prerequisite idea groups

Idea group

#	Name	Effect
1	Currency Standards	-15% Reduce Inflation Cost
2	Mercenary Hiring	-10% Mercenary Maintenance
3	State Organization	-20% State Maintenance
4	Army Administration	-5% Land Maintenance Modifier
5	Fortification Maintenance	-10% Fort Maintenance
6	Naval Administration	-5% Naval Maintenance Modifier
7	Stable Prices	+0.02 Yearly Inflation Reduction
Bonus	-	-0.05 Yearly Corrption

Unlocks

Helps in unlocking the following idea groups:

Idea group	Requirements
Empire	'Martial Administration' idea
Expansion	'Martial Administration' idea
Global Empire	'Martial Administration' idea
	'Faster Colonists' idea from 'Exploration' idea group

Asceticism

#	Name	Effect
1	Charitable Work	-20% Stability Increase Interval
2	Interfaith Dialogue	Tolerance of Heretics +1.00
3	Religious Settlements	Construction Cost -10% Prestige per Development from Missionary +0.4
4	Monastic Diversity	National Unrest -1.00 Missionaries +1
5	Missionary Work	Missionary strength +1.0% Missionary strength vs heretics +2.0%
6	Devotion	Tolerance of the True Faith +1.00
7	Fraternities	Production Efficiency
Bonus	-	Diplomatic reputation +1 Rural Goods Produced Modifier +5.0%

Bureaucracy

#	Name	Effect
1	Collaboration	Construction Time -20% State Maintenance -10%
2	Adaptability	Administrative Efficiency +10%
3	Citizen Service	Core-Creation Cost -10%
4	Ethics	Yearly Corruption -0.05
5	Civil Service	Envoy Travel Time -20% Number of States +2
6	Integration	Max Promoted Cultures +1
7	Centralization	Maximum Centralization +10
Bonus	-	Monthly Autonomy Change -0.10

Economic

#	Name	Effect
1	Trade Councils	Trade Efficiency +10% Trade Range +25%
2	Tax Agency	National Tax Modifier +10%
3	Secure Trade Routes	Construction Cost -5% Provincial Trade Power Modifier +10%
4	Real Economy	Reduce Inflation Cost -15%
5	Production Rights	Rural Goods Produced Modifier +10%
6	National Bank	Interest per Annum -1.00
7	Smithian Economy	Production Efficiency +20%
Bonus		Yearly Inflation Reduction +0.02

Unlocks

Helps in unlocking the following idea groups:

Engineering

Empire

Unlocked by administrative ideas

#	Name	Effect
1	Punish the Rebel	Harsh Treatment Cost -5%
2	Greatness	Yearly Prestige +0.2
3	Imperial Governors	Monthly Autonomy -0.05
4	Magistrate	Administrative Efficiency +10%
5	Bureau of the Interior	Number of states +2
6	Ministry of War	Aggressive Expansion Impact -5% Province War Score Cost -5%
7	I Am the Emperor!	Claim Duration +15% Maximum Centralization +10
Bonus	-	Income from Vassals +5% Vassal Force Limit Contribution +25%

Engineering

Unlocked by Economic ideas

#	Name	Effect
1	Organized construction	Construction time -30%
2	Improved gunpowder	Artillery damage from back row +15%
3	Naval construction	Ship durability +5%
4	Multi-Role artillery	Siege ability +10%
5	Pioneer corps	Settler chance +2.5%
6	Unified construction plans	Construction cost -20% Developed building cost -5%
7	New fortification techniques	Attrition for enemies +1
Bonus		Fort maintenance -5% fort defense +20%

Expansion

#	Name	Effect
1	Local Scouts	- Automatically discover adjacent when a colony is built Yearly Prestige +0.05
2	Colonists	Colonist +2
3	Private Colony Charters	Settler chance + 2.5%
4	Faster Colonists	Colonial range + 20% Global settler increase +4
5	Intrepid Mariners	Sailor recovery speed +5%
6	Tough Colonists	Land attirition -5%
7	Bring Civilisation	- Can fabricate claims overseas in trade company regions
Bonus		Prestige decay -0.5% Core-creation cost -10%

^{(Patch 2.01)}

Innovative

Unlocked by tech 20

#	Name	Effect
1	Emancipation	National Tax modifier +5%
2	Optimism	Idea cost -10%
3	Abolished serfdom	Yearly navy tradition decay -0.5%
4	Scientific revolution	Institution embracement cost - 10%
5	Formalized officer corps	Yearly army tradition decay - 0.5%
6	Dynamic court	Advisor cost - 10% available advisors +1
7	Free subjects	Rural goods produced modifier +5%
Bonus		Technology cost -10%

Diplomatic groups

Aristocracy

#	Name	Effect
1	Noble Knights	Calvary combat ability +5.0%
2	Local Nobility	Vassal income +5.0%
3	Serfdom	National unrest -1
4	Noble Officers	+1 Land leader shock
5	International Nobility	+1 Dipolmat
6	Noble Resilience	Monthly war exhaustion -0.01
7	Military Traditions	Military tech cost -5.0%
Bonus	-	+1 Extra leader

Culture

#	Name	Effect
1	Luxury Tax	National Tax Modifier +5%
2	Court of Novelties	Global Institution Spread +15%
3	Patron of the Arts	Yearly Legitimacy +0.20
4	Scientific Encouragement	Idea Cost -10%
5	Educated Ruler	Tech Cost -5%
6	Educated Court	Advisor Cost -10% Possible Advisors +1
7	Open Mind	Institution Embracement Cost -10%
Bonus	-	Yearly Prestige +0.20 Prestige Decay -0.5%

Diplomatic

#	Name	Effect
1	Flexible negotiations	Unjustified demands -20%
2	War cabinet	Monthly war exhaustion -0.01
3	Diplomatic corps	Improve relations +20% Cost to fabricate claims -5%
4	Influential diplomats	Diplomatic reputation +1 Claim duration +5%
5	Foreign embassies	Diplomatic relations +2
6	Department of foreign affairs	Diplomats +1
7	Benevolence	Lowered impact on stability from diplomatic actions Diplomatic annexation cost -10%
Bonus		Province war score cost

Eminence

#	Name	Effect
1	Diplomatic cover	Covert actions relations impact -25%
2	Experienced diplomats	Diplomatic reputation +1
3	Friendly relations	Improve relations +30% Core creation cost -5%
4	Imperial ambitions	Yearly prestige +0.15 Prestige decay -0.5
5	Fair cause	Aggressive expansion -10% Diplomatic annexation cost -10%
6	Additional diplomats	Diplomats +1
7	Additional relations	Diplomatic relations +2
Bonus		Province war score cost -10%

Espionage

#	Name	Effect
1	Subtle recruitment	Covert action relation impact -25%
2	Additional loyalists recruitment	Liberty desire in subjects -10%
3	Claim fabrication	Cost to fabricate claims -15% Claim duration +5%
4	Agent training	Diplomats +1
5	False flag operation	Aggressive expansion -10%
6	Informants	Harsh treatment cost -10%
7	Counterespionage	Foreign spy detection +20%
Bonus		Spy network construction +20% Rebel support efficiency +50%

Exploration

#	Name	Effect
1	Quest for the New World	Allows recruitment of explorers and conquistadors
2	Naval Expeditions	Naval attrition -25%
3	Colonial Ventures	2 colonists Settler chance +1.2%
4	Global Empire	Can claim provinces if overseas to their overlord or colonial nations. Claim duration +5%
5	Exploration Navy	Naval force limit modifier +10% Ship durability +5%
6	Overseas Exploration	Colonial range +40%
7	Land of Opportunity	+4 Global settler increase
Bonus		Can claim any province in colonial regions

Representative

#	Name	Effect
1	Bill of rights	National unrest -2 Claim duration +5%
2	Honour culture	Yearly corruption -0.05
3	Self governance	State maintenance -20% Yearly prestige +0.05
4	Free assembly	Years of separatism -15 States +2
5	Right of petition	Yearly legitimacy +0.1
6	Diversity	Max promoted cultures +1
7	Representation	Possible advisors +1 Stability increase interval -20%
Bonus		Provincial trade power modifier

Trade

#	Name	Effect
1	National trade policy	Trade efficiency +10%
2	Shrewd commerce practices	Global trade power+10%
3	Merchant adventures	Trade range +30% Ship trade power propagation +5%
4	Free trade	Merchants +1
5	Trade manipulation	Provincial trade power modifier +10%
6	Additional merchants	Merchants +1
7	Fast negotiations	Global trade power +5%
Bonus		Merchants +1 Merchant trade power +0.3

Military groups

Grand Army

#	Name	Effect
1	Organized recruitment	Recruitment time -10%
2	Big army small cost	Land maintenance -5%
3	Military enthusiasm	Manpower +5%
4	military dignity	Manpower recovery speed +5%
5	Quick reinforcements	Reinforce speed +5%
6	Swarm tactics	Land force limit +5%
7	Grand army	Reinforce cost -5%
Bonus		Regiment cost -5%

Professional Army

#	Name	Effect
1	Sieging troops	Siege ability +5%
2	Military treaties	Land attrition -5%
3	Formal military education	Yearly army tradition decay -0.5% Prestige from land battles +25%
4	War veterans	Morale of armies +10%
5	Military reserve force	Recruitment time -10% Reinforce speed +5%
6	Conscription lists	Manpower recovery speed +5%
7	Cannon support	Artillery damage from back row +10%
Bonus		Discipline +2.5%

Quality

#	Name	Effect
1	War College	Leaders without Upkeep +1
2	Victorious Army	Yearly Army Tradition Decay -0.5%
3	Military Drill	Morale of Armies +5.0%
4	Massed Battery	Artillery Combat Ability +10%
5	Our Walls will not Fall	Fort Defense +10%
6	Finest of Horses	Cavalry Combat Ability +10%
7	Quality Education	Recover Army Morale Speed +4.0%
Bonus	-	Infantry Combat Ability +10%

Quantity

#	Name	Effect
1	Manufactured Uniforms	Infantry Cost -5.0%
2	Enforced Service	Land Maintanance -5.0%
3	Military Horse Breeding	Cavalry Cost -5.0%
4	Levée en Masse	Possible Advisors +1 Possible Condottieri -50%
5	Standarised Calibres	Artillery Cost -5.0%
6	Military Parades	Land Force Limit Modifier +10%
7	Victory Behind Numbers	Reinforce Speed +10.0%
Bonus	-	National Manpower Modifier +15%

Standing Army

#	Name	Effect
1	Forced conscription	National manpower +5% Prestige from land battles +25%
2	battlefield commision	Army tradition from battles +100%
3	Faith in victory	Recruitment time -10% Leaders without upkeep +1
4	National enthusiasm	Land force limit modifier +10%
5	National conscripts	Yearly army tradition decay -0.5%
6	Levy system	Manpower recovery speed +5%
7	Expanded supply trains	Land attrition -5%
Bonus		Reinforce speed +15%