How many Roman emperors ruled during the 50-year period covered by this chart? How many died a natural death? How many were victims of assassination or possible assassination?

19 Roman Emperors ruled during the 50-year period according to the chart. Only one died naturally. Twelve died of an assassination or a possible one.

Explanation:

it was the "4. potsdam" conference that demanded the unconditional surrender of japan, since it was clear that the japanese would continue to find until the very last man otherwise.