Answer:
Serbian nationalism increased tensions within Europe before World War I. Serbia wanted to create a pan-Slavic state in the Balkans which included Bosnia-Herzegovina, held by Austria-Hungary. Serbia was allied with Russia and Austria was allied with Germany. Russia allied with France. A war between Serbia and Austria threatened to involve the whole of Europe.
Explanation:
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I would like to say C, because they were imperialistic power who sought out many colonies through out the world and they were heavily militaristic about these colonies. But I would wait for a second answer before you choose C, as I am unsure of this.
The answer is C both dynaties played an important role
B. both were total wars involved countries entire populations(apex)