How did conditions change for German Americans
between 1915 and 1918?

Indoctrination  

Explanation:

The same thing happens with religions, terrorists, and extremists

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, and 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 changed with the outbreak of war.

Explanation:

affirmative action refers to the policies that take gender, race, or ethnicity into account in order to promote equal opportunity.

employers subject to title vii are prohibited from taking race or sex into account in any employment decisions. aa is a penalty for having any job group substantially statistically "underutilized" in any race or either sex. the employer must take steps to eliminate the underutilization, then stop, ending its aa efforts