How is the relationship between the church and the state expressed in the mosaic portraits of the Byzantine emperor Justinian and Empress Theodora from San Vitale in Ravenna, Italy?

Following the writing guidelines please answer the following question/prompt:

1. We often have to consider the political motives behind art. How is the relationship between the church and the state expressed in the mosaic portraits of the Byzantine emperor Justinian and Empress Theodora from San Vitale in Ravenna, Italy? Consider the history and symbolism of the imagery as well as the placement of the images in the church. Compare these images with the portrait of Otto III from his Gospel Book or other images with political or propagandistic motives.

Book Janson History of Art The western tradition