Cant be A Cant be B so it has to be (C.)
For 391 years, going from 794 to 1185, the real power in Japan was in the hands of the Fujiwara family (A option), they achieved that by monopolizing regent positions. The seize of power by abdicated emperors at the 11th century followed by the rise of the Samurais led to Fujiwara's gradual decline.
The Supreme court was involved in the case, but the people who argued for their clients were Addis Emmet and Thomas J. Oakley argued for Ogden, while U.S. Attorney General William Wirt and Daniel Webster argued for Gibbons.
