During world war i, german immigrants did not want to be identified as supporting the german kaiser. as a result, they began to eat american foods, dress like americans, and even changed their last names to sound more american. this is an example of

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.  

well i'm late but i think its: b, c, and e