I've played 40 hours and never seen the UI button to upgrade dirt roads...do I need to research a specific technology?

what upgrades are available for cavalry? they seem limited when compared to foot, such as pathfinder is not available. and how do i upgrade them, some upgrades i can do at city, some i have to do at stable, i couldnt find anything in manual. i also dont get diplomacy, every diplomat i send fails, i always have to wait for other nation to send diplomat. before i made mistake of taking cities by siege which got me the negative "dishonorable actions" effect, i started new game, no sieges, but my envoys cont...

Carthage vs Rome. I don't see unit lists in any manuals

Hello Is there any possibility to do something with this roaming "Sage" or "Sorcerer"? I dont know how to say it, i mean this one what roam at the map and can give upgrade for our units. Because its a little annoying than when he go and destroy my upgraded field where he stay, so i have to upgrade it all over again. Thanks for answer :)....

The temples are buggy. In the base game Imperium's: Greek Wars plus Peloponnesian wars the temples lose their connections with the cities haphazardly. they will be connected and you will see the blue connections and in the next turn some go back to unconnected and connecting in a turn or two. Now the blacksmiths dont have problem they work perfectly from the start. Just load up a game with Sparta and you see this problem during the turns. Is this a feature or a bug? or am I missing something here?...