Answer:
D. Caliph
Explanation:
A caliph is an Islamic leader and succesor under the delegate of Prophet Muhammad and was the main authority and in charge of all the community.
That power is called an authority.
From 1300s to 1500s, which is about two centuries, Japan tore itself
apart in the feudal wars and all the civil conflicts. Due to Minamoto's
victory, Japan transitioned to medieval feudalism and power rested upon
two shogun regimes, the Kamakur and Ashikaga.
