Which of the following did NOT contribute do the diffusion of Christianity? United States' involvement in the Vietnam War

Missionaries during the 18th century

European colonization of the new world

Medieval and renaissance era kings/queens forcing their citizens to practice

United States' involvement in the Vietnam War

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; /// the rich had great responsibilities to society;