If AI found you city and we sign Open Borders AI gets Trade Routes benefits but I don't (human lacks resources to explore map on higher difficulty). Should I keep borders open? Considerations: * AI has many scouts and he finds me first but I don't for a long time (because of difficulty level). So AI benefits from trade routes, I don't. * 2 AIs are fights each other and ask me to join their sides. I get -1 penalties for each. As I understand they can't demand if we aren't in trade relations... Am I right? Is it beneficial? * I remember mentioning that Open Borders adds +1 to relations each 25T (and each gifted resource +1 for 50T): https://forums.civfanatics.com/thre...tive-truth-about-diplomatic-modifiers.655216/ What is correct formula?