What helped unify the Carolingian Empire?​

The Carolingian dynasty began with Charlemagne's grandfather Charles Martel, but began its official reign with Charlemagne's father, Pepin the Short, displacing the Merovingian dynasty. The dynasty reached its peak with the crowning of Charlemagne as the first emperor in the west in over three centuries.

It is meant that like tapestry scientific theories often need to pull out since they are not relevant and often times the whole chain of theories may be pulled out.