NullReferenceException when trying to access other GO in script. C#

Hello guys i've been going crazy for the past few hours trying to figure out what i could possibly be doing wrong. I have a fair bit of knowledge in both c# and unity's librarys. What my method is doing is scanning a List to and accesses the particular country gameobject. After the GO(gameobject) is found it scans the scripts list of objects(Tagobjects). I then attempt to access the GO's bool variable,however i get a error once i try to read the proviencewindowdisplay script in the gameobject.

 foreach(Country country in EnemyCountrysList)//accessing country objects in list
         {
             Country tempcountryinstance = country.GetComponent<Country>();
             foreach(GameObject GO in tempcountryinstance.TagObjects)
             {
                 ProvienceWindowDisplay display = GO.GetComponent<ProvienceWindowDisplay>();//display gets component data for Specific GO
                 if(display.BorderProvience)//NULLREFERENCEEXCEPTION HERE
                 {
                     if(tempcounter == 0)
                     {
                         BorderProviencesList1.Add(GO);
                     }
                     if(tempcounter == 1)
                     {
                         BorderProviencesList2.Add(GO);
                     }
                 }
                 
             }
                 tempcounter++; //temp counter increment cause a new list to be populated with a different country instances proviences
         }