Drama and Poetry is no longer a prereq for Civil Service.I didn't quite understand why Philosophy required Calendar, so that prereq was moved to Drama and Poetry (hey, no one's going to go see your fancy play if they don't know what day it is!). This was done for both aesthetic and functional reasons. The locations of the 'Philosophy' and 'Drama and Poetry' technologies was swapped.Open Borders treaties were moved to Code of Law to make them accessible a little earlier (and to make the technology useful to players who aren't capturing cities).This way, overly-aggressive players who beeline to Iron Working and/or Mathematics so they can capture cities will have to take a minor detour through the culture and science path of the tech tree in order to be able to annex those cities and start using them as unit-farms. The primary intent of this mod is to move the Courthouse building away from Mathematics so that players do not gain access to the building that nullifies unhappiness from city occupation at the same time that they unlock the first siege weapon. It allows Courthouses and Open Borders treaties.
The new Code of Law technology requires Writing and leads to Philosophy and Civil Service.