Which of the following are accurate statements about how europe changed as a result of otto the great's rule? select all that apply.
a.
europe was divided among several german nobles.

b.
an empire made up of germany, parts of italy, and much of central and eastern europe was created.

c.
europe was unified under a single government.

d.
a line of ottonian kings ruled after otto's death.

e.
the empire came to be known as the holy roman empire.