Unrestricted submarine warfare (on merchant ships) and the sinking of the RMS Lusitania.
Answer:
The counterculture started to rise because many youths wanted an escape from the "norm" and tradition. Music and art helped shape this new movement. Rock-and-Roll was a major characteristic of this new generation.
Explanation:
Casualty rates at the Battle of Okinawa and Iwo Jima plays a small role in the justification of dropping the atomic bomb, and is by no means the only justification or even the major justification in using the atomic bomb. They were, after all, only used as a statistical report through the casualty per sq. mile report of what can occur when invading the mainland. So yes, it may be a means towards the justification, but as the justification itself it is not.
~
The federal/central/national government was weak under the Articles of Confederation
One of the changes that prompted the decline of the Soviet Union was that food shortages were common and were also excesses in military spending. The food scarcity problem has become one of the major economic problems that took place in the Soviet Union wherein the country had to rely much on imports.