The correct answer is B) German-American schools, churches, and magazines largely abandoned the use of the German language.
One effect that World War I had on German Americans was that German-American schools, churches, and magazines largely abandoned the use of the German language.
Without a doubt, the German community in the United States suffered from anti-German sentiments during and after World War 1. US citizens started to demand the ban of the German language in the country. This meant no more German-speaking in schools or churches. Many German sites such as theaters were closed. And people also demanded to stop any kind of publication in German, magazine or newspaper.
