Iron Curtain (Civ5)

Iron Curtain is a Level 3 Order tenet in Civilization V: Brave New World.
==Game Info==
Free Courthouse upon city capture. Internal trade routes provide 50% more or .
The free Courthouse is awarded only if you annex a city immediately after capturing it. You do not gain the Courthouse if you liberate or puppet a city, even if you annex it right after making it a puppet.
==Civilopedia entry==
Category:Ideological tenets (Civ5)