Your answer is A they moved quickly after the election of Lincoln
Robots may be able to help doctors take care of people because of so many reasons.
your reasons can be,
Doctors will be less busy
They can keep people company
They can bring doctor tools
A war instigated by a major power that does not itself become involved. for example the cold war and their proxy wars which are Vietnam war, korean war, ect.
Sorry idk this one hope I can help on the next
