Answer :
Final answer:
The Christian worship service's unity through Roman chant was essential for Carolingian leaders as it symbolized divine authority and helped legitimize new rulers.
Explanation:
Why was it important to the Carolingian leaders that the Christian worship service be unified?
The Christian worship service being unified, especially through the use of Roman chant, was crucial for the Carolingian leaders as it acted as evidence of a 'divine' mandate, symbolizing the eternal order of the realm and helping legitimize new rulers through Christianity. The centralized authority and standardized liturgy helped maintain control over distant congregations and prevent churches from breaking away.
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