The conflict between Kings and Church officials sounded like this: Who has more power? Both the Kings and the Church have power among the population of the kingdom. Church had the power among people beliefs, because they were devoted to their religion. King was the ruler of the kingdom and maintained his power by winning the battles and taxing his subjects.
The conflict existed over who should have the ultimate authority over people. They often clashed and the people had to choose sometimes whether to support what the pope says or what their king says. Such example can be King Henry VIII who wasn't allowed to get a divorce so he created his own type of Christianity where he could get a divorce.
The last great prophet was Muhammad. He is considered the HUMAN founder of the religion. The Muslims believe that Allah was the founder of the religion. BTW- I'm not Muslim, I've been studying these stuff.
the Middle Ages or medieval period lasted from the 5th to the late 15th century. It began with the fall of the Western Roman Empire and transitioned into the Renaissance and the Age of Discovery