It's A... <span>they were afraid he would close American ports.</span>
Maybe there were no cures, vaccines, or antibodies at the time. Medicine was never completely discovered for centuries to come, which is why the Black Plague occurred during the medieval/Middle Ages.
"A historical fact is a fact about the past. It answers the very basic question, "What happened?" Yet beyond merely listing the events in chronological order, historians try to discover why events happened, what circumstances contributed to their cause, what subsequent effects they had, and how they were interpreted."
Provided by https://www.beyondintractability.org
Answer:A similarity between World War 1 and World War 2 is both countries upsetting the control equity in Europe for their own achievement.
Explanation:
Answer: The expressed powers
Explanation: The powers are clearly laid out and understandable of what Congress can do