Pope Gregory was both devout and clever. ... The conflict between Henry IV and Gregory VII concerned the question of who got to appoint local church officials. Henry believed that, as king, he had the right to appoint the bishops of the German church. This was known as lay investiture.
Greg Heffley as he attempts both to deal with his Grandpa's moving in, and dealing without modern comforts while attending Hardscrabble Farm. Greg gets roped into volunteering at the park as well. is the answer to the question