Answer:
probably because the transition was remarkably smooth.
Explanation:
Central powers, war war 1 coalition that consisted primarily of the German Empire and Austria-Hungary the central
Answer:
the choice is A
THis is because an aggressor is a country that begins hostility or attacks first
Maybe there were no cures, vaccines, or antibodies at the time. Medicine was never completely discovered for centuries to come, which is why the Black Plague occurred during the medieval/Middle Ages.