In 1918 and 1919, during world war i, sudden outbreaks of influenza (flu)
killed millions of people around the world. what most likely contributed to
this pandemic?
o
o
a. people were afraid to travel because of the dangers of war.
b. global environmental problems were making people ill.
o
c. the movement of soldiers spread the infection from place to
place.
o
d. low standards of sanitation made it easy for germs to spread.