An Advance from Sid Meier's Civilizaton.
The ancestors of modern alphabets were the iconographic and ideographic symbols developed by ancient man, such as cuneiform and heiroglyphics. The development of the alphabet was significant because it allowed ideas to be transferred by paintings on pottery, carvings in stone, or impressions in clay, rather than simply face to face by either voice or hand signals.
No prerequisites.
Allows for: Advances Code of Laws, Mapmaking, Writing, and Mathematics.