Question

How was World War I different from earlier wars?

A It started because of alliances and treaties.

B Belgium was involved in a war.

C There were so few people involved in the war effort.

D There was such a huge number of people involved in the war effort.

Answer 1

The answer is D.
World War I wasn’t named like that for no reason it was the biggest war yet in history and many Europeans as well as Americans were involved in the conflict.

Answer 2

Answer:

A It started because of alliances and treaties.

Explanation:

The First World War differ from previous wars because its reliance on advanced industrial technology and the elaborate economic and political organization of belligerent nations. The first widespread use of machine guns, air power, submarine operations, poison gas and armored vehicles.