Carolinigian missions extended beyond the area of Papal missions and created a powerful Christian center around the Carolingian court. Carolinigian monarchs made a conscious committment to the creation of a uniform Christian society. They wanted to standardize texts and rites (which T Klausen argues up till that time had been local and individual) and extirpate paganism.
Death is important in this context because older rituals and traditions surrounding dying, death, and funerals tended to persist despite Christianization and reforms. Carolinigian interference included forbidding cremation funerals, mortuary sacrifices, and divination. These were to be replaced by penance before death, and prayers and masses for the deceased.
A very thorough analysis on the history of 'creating a ritual process' surrounding death in regards to the cross-influence of various cultures and interpretations of Christianity and the afterlife.