To further distinguish civilizations, every civ received a Unique Building that replaces a standard one (e.g., the Zulu "Ikhanda" replaces the Barracks), providing specialized bonuses. New Civilizations and Leaders:
A new diplomatic mechanic where players can subjugate other civilizations or offer themselves as a vassal. Vassals provide tribute and support their masters in war but may secede if they regain enough power. Sid Meier's Civilization IV: Warlords
Includes leaders for the new civs and additional leaders for existing ones, such as Stalin (Russia) and Churchill (England). To further distinguish civilizations, every civ received a
Released in July 2006, is the first expansion pack for Civilization IV , primarily focused on enhancing the military and diplomatic aspects of the game. Key Gameplay Features Includes leaders for the new civs and additional
The expansion includes that offer gameplay different from the standard 4000 BC start, such as the Rise of Rome , Chinese Unification , and Genghis Khan . It also introduces three new wonders , including the Great Wall, which uniquely shows up on the world map. Civilization IV: Warlords Review - IGN
Three new leader traits— Charismatic (+1 happiness, faster promotions), Imperialistic (faster Great General generation, faster Settlers), and Protective (free promotions for archery/gunpowder units). Scenarios and Wonders
The Carthaginians, Celts, Koreans, Ottomans, Vikings, and Zulu.