Ideagroup 6
*Galley Focus*
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Like The Harbour of Carthage
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Galley-Shipyards
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Improved Rams
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Naval Glory
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Improved Naval Fighting Instruction
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Double Hulls
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Naval Artillery
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bonus
*Light Ship Focus*
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Light Ship-Shipyards
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Oak Forests for Ships
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Trade Tradition
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Naval Cadets
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Huge Trade Fleet
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Merchant Intelligence
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Superior Seamanship
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bonus
Fleet Base Ideas
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We Need Bases
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Garrison Fleet
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Base Conquest
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Base Garrison
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Experienced Seamen
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Sea to Land Battle
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Oversea Shipyards
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bonus
Quality Ideas
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Private to Marshal
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Quality Education
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Finest of Horses
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Corvettes
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Naval Drill
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Copper Bottoms
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Massed Battery
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bonus
Norse Ideas
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Effective Raiding Parties
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True Norsemen
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The Vinland Saga
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Lumber Industry
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Raze it!
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Encourage Norse Temples
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New Farming Techniques
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bonus
Slav Ideas
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Old Stories
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Home Ghosts
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Storyteller
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Water Ghosts
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Elements Doctrine
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Cultural Exchange
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Fighting Spirit
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bonus