What was one effect of the us protectionism policy after world war i?
a. inflation in europe and asian countries
b. higher taxes on foreign imports
c. deflation in the united states
d. increased migration to the united states

a

explanation:

ww1 weapons: tank. tanks were used for the first time in the first world war at the battle of the somme. they were developed to cope with the conditions on the western front. the first tank was called 'little willie' and needed a crew of 3.