Answer:
the first blank is letter C and the secocond one is A.
Explanation:
1: Peninsula
2: Volcanoes
3: 4
4: Destructive Waves
Hope this helps!
At the beginning of the great war, many people were actually enthusiastic about the war (and at least supported it), which was fuelled by nationalism ( and the desire to prove themselves better than other nations) and perhaps hopes for territory gain; at the time it was not known that the Great War would come with such a great loss of life.