4. Which of these happened first? A)The first flu vaccine was developed.
B)A soldier showed up with the flu at an Army
base in Kansas.
C)World War I began.
D)About 200,000 people attended a parade
in Philadelphia to support the war effort.

B

Explanation: The World War 1 is what made the Flu become forgotten about/ overshadowed the reason the whole frlu started was because a soldier walked into a Army camp.

for (a) a tragedy was considered a main greek drama and it influenced alot of others. for (b) the actors in greek theater were named as aeschylus, sophocles, and euripides and sometimes playwrites. for (e) in a semi-circular theater called the "orchestra.". we'll the question was explain where the namer actors originated.

hope this : d

“a committee reviews the bill and marks it up to make it more viable and to reflect interests