Simple, thread title says it all. How early can you achieve populations of 1 billion with the RFC civs? The challenge to be played @Monarch level, 1.187. Thanks to AP for the idea in the "ZOMFG Look What Happened" thread. China: 1823, youtien India: Babylon: Egypt: Greece: 1778, Soda Rome: Japan: 1721, youtien Carthage: Persia: Maya: Ethiopia: Khmer: Arabia: France: 1872, Jusos2108 Germany: Poland Spain: England: 1823, blizzrd Russia: Vikings: 1943, Jusos2108 Aztecs: Incas: Turkey: Mongolia: Mali: Netherlands: 1930, Tlonitte Portugal: USA: 1979, Tlonitte Good luck to all!