looking for a diplomacy article

[Immaculate]

Does anyone have a link they can provide me for a guide to how long different diplomacy modifiers last?

I am mostly interested in finding out how long the 'you declared war on our friend' modfier lasts?

Also, how fast does the 'our trade relations were fair' fade?

 

[Refar]

I dont know a appropriate article.

"Declared War on a Friend" lasts forever (or at least has a very low chance to decay).