Answer:
C. European involvement helped expand the slave trade within Africa.
Explanation:
It was created to protect ad help former slaves after the war.
For the answer to the question above, t<span>he rejection of the league of nations, the higher tariffs imposed by the or deny-cucumber act and the emergency quota act all point to America's desire of isolationism during the early 1920's.
</span>The American foreign policy of Isolationism in the 1920's<span> was a diplomatic and economic doctrine that aimed at self-advancement to make the United States economically self-reliant and retaining peace with other nations.</span>
it was old-school war meets new technology
