spies and visibility access

[Ostelen56]

I used one of my spy to raise the level of visibility access but I still can not see the unknown reason why he does not like me. Is it a way to access this information ? What is the use of raising the visibility access so ?

 

[Buktu]

There is more than one level of visibility. You will need more than just this one to get all the information. Send them a delegation and a trade route, get into an alliance with them and so on to further increase yours. Also have a highly promoted spy do the mission to get +2 visibility instead of just +1.