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3
Advancement of Siege Weapons
-15% Military technology cost
Requirements
full_idea_group - siege0
full_idea_group - humanist_ideas
Foreign Merchants
-10% Military technology cost
Requirements
full_idea_group - dynasty0
full_idea_group - waffenqualitat0
Technical Exchange
-10% Military technology cost
10% Trade efficiency
Requirements
full_idea_group - assimilation0
full_idea_group - waffenqualitat0