The answer... I think is C... hope it helped :)
Maybe cold war and soviet war<span />
Cant answer without seeing page 219, but propaganda is bascially biased information used to support someone elses views
"At the same time, the Civil War takes away many in their prime, and the U.S. experiences a new kind of mourning when, for the first time, a president is assassinated. The average life expectancy during this era was 40."
There u go!
The US wanted to know if nixon was responsible for watergate(he was), and he almost became the first impeached president.