<span>Extreme
nationalism means increased pride and interest in the success of a
nation. Pride indicates the belief in cultural and military superiority.
Many Europeans justified imperialism by saying they were superior to
nonwhite civilizations. </span>
Historians consider the greatest achievement of the Byzantine Empire to be the preservation of Greek and Roman cultures Because
Greek and Roman literature, arts, mathematics, engineering, etc. has
been preserved by the Byzantine Empire, people were able to have access
to the information and ideas that the Greeks and Romans produced which helps modern mathematicians and engineers to this day.
I hope it helped
