Who was the strong Frankish leader who ruled with government?

The strong Frankish leader who ruled with a centralized government was Charlemagne, also known as Charles the Great. He reigned from 768 to 814 and expanded the Frankish empire significantly, promoting education and the arts during the Carolingian Renaissance. Charlemagne established a system of local governance through counts and developed a cohesive administrative structure that helped unify his diverse territories. His reign marked a significant turning point in European history, laying the foundation for the Holy Roman Empire.