1. How do these charts, graphs and images help to give a visual representation of the virus?

They help because it gives people to know that they dont  want it or how it can be bad in way it look or  a oppoion  Explanation:

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.