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Civilization IV comes with 86 technologies. The Beyond the Sword expansion pack adds six new technologies and changes three of the old ones. The Warlords expansion pack neither adds nor changes any technologies.

Techtree original

Civilization IV Technology Tree

Civilization IV [edit]
WarlordsBeyond the SwordColonization

BuildingsCivicsCivilizationsPromotionsResourcesSoundtrackTechnologiesTerrainsUnitsWonders

†Total conversion remake of the game Sid Meier's Colonization using Civilization IV engine