Ummmmm okay? Do you not have a question or smth
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.
The answer is D because it is factual and unbiased since it's in a medical journal on the topic of the Spanish flu
Books made by a certan person or subject,<span>a list of the books referred to in a scholarly work, usually printed as an appendix.</span>
