Answer:
Inventions like the airplane and machine gun
Explanation:
World War I was so deadly because all of the new weapons that were invented. New technology that was being invented such as machine guns and mustard gas made war deadlier than every war before.
The answer is A
i'm filling out character space now
Because they had many ways of doing things and were a very intelligent society.
-Hope it helps.
Answer: umm you don’t have any pictures or questions
Explanation:
