Richmond Virginia in April 1861
I think B but I'm not sure if this is right. We are learning about this now (Im in 6th) in Social Studies. I hope I helped!
The sixteenth amendment (amendment XVI)
In 1917, Germany, determined to win its war of attrition against the Allies, announced the resumption of unrestricted warfare in war-zone waters. Three days later, the United States broke diplomatic relations with Germany, and just hours after that the American liner Housatonic was sunk by a German U-boat.
With more than one ruler the empire would be better suited to protect itself from threats from barbarians and persia