After wwi ended the of 1918 swept through europe making recovery from the war an even greater challenge.
a) polio pandemic
b) influenza pandemic
c) small pox pandemic
d) black plague

After WWI ended the influenza pandemic of 1918 swept through Europe making recovery from the war an even greater challenge. To make matters worse, disease from exposure was actually the leading cause of death during World War One itself. 

Ibelieve the answer is (a) true.