During the sway of Charlemagne was an epoch of almost incessant warfare. The church was objected by the people he ruled. He successfully accomplished the downfall of all German speaking tribes and he extended his kingdom in all direction. He also Christianized it. The world in which Charlemagne lived was experiencing a continuous war and the people were pagans. He tried to overcome the war which at last came to an end. He also tried to convert people to Christianity. (Einhard 58)
Read more on State Church Charlemagne here...