Quote Originally Posted by Verdizzy
Do trade rights expire after "x" amount of turns? Is there a way to quickly look at a list of the factions you have trade rights with?
No, they should last forever. You do lose them though if you end up at war with the faction. The easiest way to find out how you are diplomatically involved with other factions (including trade rights) is via the diplomacy window. Hover the mouse over any given faction and a pop-up tells you what diplomatic things you have with that faction: alliances, trade rights, military access, etc. It's actually pretty handy