What does the style of the Palatine Chapel indicate about Charlemagne's view of his rule?

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The style of the Palatine Chapel, which was modeled after ancient Roman architecture and decorated with mosaics depicting Charlemagne as a Roman emperor, indicates that Charlemagne saw himself as the true heir to the Roman Empire and sought to legitimize his rule through associating himself with the grandeur and authority of the Roman Empire.

What Does the Style of the Palatine Chapel Indicate About