Answer:
World War I is an example of the way wars tend to lose popular support after many years and mounting causalities. By 1917, the European public began to denounce the war and call for peace. Many soldiers, too, lost their resolve and deserted.
Didn't read the book but mostly Louis was brave because he risked making vaccines and testing them on others to save many more people. He made the effort to save others and did a lot of work and experiments to help advance the medical world of science.
Hey!! I believe that the answer is D. Ethnic and religious diversity!!
Step 1: Hold it
Step 2: Walk calmly
Step 3: Enter restroom
Step 4: Calmly sit down with pants off
Step 5: Release