Boardgamegeek https://boardgamegeek.com/boardgameexpansion/146244/clash-cultures-civilizations
English - Expand your civilization's influence with Clash of Cultures: Civilizations, an expansion for Clash of Cultures. Discover fourteen historical civilizations, each with four unique advances and three unique leaders.
Ludovox http://ludovox.fr/jeu-de-societe/clash-of-cultures-civilizations-6367/
French - 1ere extension pour clash of cultures !