What was a significant impact of World War I for the United States? A. The United States joined Europe briefly as one of the major world powers.
B. The United States joined a military alliance with the Allied powers
C. The United States allowed France to trade with South American colonies
D. The United States was required to pay reparations for war crimes towards Germany

it is A the reasone why i say that read all of them and you will get A

world war i had a devastating effect on german-americans and their cultural heritage. up until that point   german-americans, as a group, had been spared much of the discrimination, abuse, rejection, collective mistrust experienced by so many different racial and ethnic groups in the history of the united states. indeed, over the years, they had been viewed as a well integrated and esteemed part of american society. all of this change with the outbreak of war.