The effect of the neutrality acts of 1935-1937 was to? :
a. halt all trade between the u. s. and belligerent nations.
b. encourage aggressor nations because they knew in advance that the u. s. would not become involved.
c. encourage trade between the united states and belligerent nations.
d. prevent united states involvement in european wars.
e. encourage peaceful settlement of problems between potentially belligerent nations.