According to freud, a series of stages that children pass through in which pleasure, or gratification, is focused on a particular biological function and body part is called

The answer to your question is,

Psychosexual development.

-Mabel <3

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.  

answer; triadic reciprocal determinism;