Hi Friend! I believe your Answer is:
(A) The informal language creates a conversational tone.
I Sure Hope this was Helpful!
Have a Brainly Day!!!
Answer:
.
Explanation:
If youre asking how it helped soldiers in ww2: It could have spread to the enemy spreading disease amongst enemy soldiers, most likely killing them after a while.
But if youre asking how it helped cause the war: It could have helped cause the war by all the unrest in the world at the time or people could have immigrated to enemy countries and spread the virus.