What resulted from the popularity of the film The Birth of a Nation? A. Historians picketed the film,
B. Southerners refused to watch the film.
C. People were inspired to form a new Ku Klux Klan.
D. President Wilson banned the film,

The statistics for the eastern war are grim. more than three-million men died in the fighting, more than nine-million men were wounded, and every major country which participated lost its form of government.

Well, by looking at your question and also your answers that you have provided your answer to your question is going to be choice a) protestants.this is because they had been a member of or follower of any of the western christian churches. these churches had been separated  from the roman catholic  church and they follow the principles  of reformation, and baptism, and also the luthern churches, and finally  the  presbyterian.i hope this mark me as brainiest