Answer: it would be the renewal of unrestricted submarine warfare from Germany. Otherwise C
Explanation: The Germans continue to become more and more ferocious with their U-boat attacks, their hopes were to cripple the United Kingdom by silently attacking supply ships. Once the Lusitania was sunk the world became aware of the tragedies of unrestricted, moral ignored warfare
A. A religious work of art.
World War I was a result of alliances between many countries, tension from the scramble for Africa/imperialism, severe nationalism that officially started the war (Franz Ferdinand’s assassination) and advancements within military weapons that allowed countries to fight.