The two years prior to World War I in the region of the Balkans saw the rising of Serbian nationalistic Groups. Later came the assassination of the Archduke Ferdinand in the Balkan City of Sarajevo, main cause of the war.
Answer: King of the Franks, then King of the Lombards, then Emperor of the Romans.
During the early middle ages, he united the majority of the western and central Europe. He founded the Holy Roman Empire.
Explanation:
I am pretty sure that it is C, I am not 100% sure.
Answer:
weapons and war resulted in lots of death and it made polution
Explanation: