Answer:
Probably medicine, although not sure.
Explanation:
Accidents and diseases and injuries and other medical related problems happened all the time on the Trail, so A seems the most likely.
Kentucky because i looked it up
Answer:
By not printing loads of money to fast and spreading it out
The United States assumed that since the USSR was attempting to spread communism into Asia, countries around the main target would fall as well - the Domino Effect.
The United States fought to prevent the spread of communism by interfering in countries such as Vietnam and Korea - however, both outcomes were unsuccessful or did little to nothing.
Yes, they were correct as once Vietnam fell to communism so did Cambodia and Laos.
Hope this helps!