Charlemagne first came to power using which of the following tactics?

a.) he allied with his brother to defeat a rival leader.
b.) he asked the pope to name him the emperor of the west.
c.) he named himself emperor of the west.
d.) he allied with the lombards to overtake his brother.

Charlemagne also called as Charles the Great, he first came to power using the tactics of option D, he allied with the Lombards to overtake his brother. He proceeded with his dad's strategy towards the papacy and turned into its defender, expelling the Lombards from power in northern Italy and driving an attack into Muslim Spain