How many people would be interested in what they are selling would be the most influential.
In my opinion, I think the bombs being dropped were necessary. Japan had a strict military system that was hard to make them surrender. It included dying for your country was the most honor you would ever live for and that if you were selected to be a fighter or suicide flyer that you would have to or face serious consequences, not just for you, but extreme humiliation for your family. Truman saw this as we can invade and lose our lives too(American lives) or go to a speedy end to WW2 by dropping the atomic bomb.
Answer:
They had no goods to trade
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.
