What was one step that charlemagne took to unite his kingdom? a. he chose a single strong heir to inherit his throne. b. he drove muslim forces out of europe. c. he created and supported schools. d. he declared himself head of the catholic church.

D. He declared himself head of the Catholic Church is the right answer.

Explanation:

The power Charlemagne was aimed at uniting the people in Germany to form one vast kingdom and convert them into one religion that is Christianity. Therefore to ensure the mission was a success, heuntilized most of the reign in engaging with the military during the campaigns.

When he becomes the king, they attacked the Lombard’s and other parts of Australia to exert revenge from the pope. He, however, emerged victoriously he was crowned as the king in the Christmas day.

we need a diagram to you sorry