How did nationalism contribute to the start of world war i?
o
a. it led many europeans to view their own countries as superior to
other states.
b. it excluded certain ethnic groups from joining military alliances,
which created tension.
) c. it started the process of defining and changing national borders,
which eventually led to conflicts.
o
d. it created distrust between countries that practiced democracy
and those that did not.
(apex)