A possible danger the gusher presented was crude oil.
That would be William McKinley
Well, the revolution of Germany was a part of many known as the revolutions of 1848. Otto von Bismarck helped use nationalism to unify the previous German states.
From the judges in federal appellate courts determine whether a lower court made an error in a case. And the answer should be C. a lower court made an error in a case.
Hope it helped!
-Charlie