I think the answer would be C. y
Answer:
In order to have reduced the impact of 1918 Spanish flu was to social distance and reduce people out in the open and no large gathers instead of having a parade during the peak of the Spanish flu.
Explanation:
1.To establish separate governments
2. So that one group could not become too powerful
3. Because there were 3 Roman Emperors at the time
4. So the Emperor could employ more citizens