Which disorder is a psychological response to a trauma such as a life-threatening accident, a natural disaster, sexual assault, or gun violence that leads to repeated reliving of the incident and persistent psychological symptoms that interfere with normal functioning?

Post-traumatic stress disorder

Explanation:

Post-traumatic stress disorder (PTSD) is a mental condition developed after a person witnesses or experiences a traumatizing event. Symptoms usually appear months after the event took place, sometimes even years afterwards. Those symptoms include: physical reactions and emotional distress, flashbacks and nightmares about the event, hopelessness about the future, etc.

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.