What did most americans understand before their country entered world war i?
o that the war would not last long
o that the war would cost american lives
o that the war would thenh/s economy
o that the war could be won by the us alone

most American understood That the war would cost American lives  ( B )

Explanation:

Most Americans understood that joining the world war 1 by sending their soldiers to fight would cost the lives of their soldiers ( American live ) because most American soldiers as at the time of world war 1 were not properly trained and used to using the modern war equipment being used by the Europeans. Nobody knew how long the war would last so most Americans did not understand that as well. the war could not be won by the US alone that was understood by all including the Germans and the British even Americans at large. they didn't understand how the war would help their economy either.

what are the reasons

the options of this question are:

a) president wilson’s desire to form the league of nations  

b) germany’s desire for reasonable conditions of surrender and fair treatment.  

c)europe’s desire to maintain original pre-war borders  

d) the allies’ desire to seek retribution for germany’s actions

the correct answer is d) the allies’ desire to seek retribution for germany’s actions.

the allies’ desire to seek retribution for germany’s actions had the greatest influence on how germany was treated after world war i.

it is estimated that the cost of wwi was around 260 billion dollars, and the allies wanted germany to pay a big part for the losses. the allies also wanted to impose land losses as well as limit the army of germany and confiscate their industrial resources to apply the retribution.

in the united states, president woodrow wilson created the fourteen points to be delivered to germany, as a peace program. he presented these documents to the u.s. congress in january 1918.