With the Age of Reason, the eight Cultural <l:6,66>Advance<e>, man breaks free of superstition and attacks the world with deductive reasoning and a skeptical scientific mind. These inquiries begin with the natural world, but soon cross into human culture, questioning assumptions about equality and rights, ending the effects of great many ancient Wonders. The new Wonder, the <l:3,21>Emancipation Act<e>, spawns great celebrations and invites revolting cities all over the world to join the Civilization who completes it.