What groups did not threaten charlemages empire after his death

Which of these was one of the most important aspects of washington's presidency a. he did not consider how his actions would affect later presidents b. he came to believe that political parties would be good for the country. c. he insisted that congress make specific rules about the duties of the president d. he did not take advantage of the opportunity to keep the power the country offered him.

Define”to walk with a large group of people who are supporting something”

The eastern roman empire is also known as what empire