B - Slave revolts.
The revolt of Spartacus, which was also the most famous slave uprising in the history of the Roman Empire, lead to questions about the usefulness and effectiveness of the current governmental system in Rome. This, along with other factors, made them plunge into a crisis which ended through the transition to an empire.
<span>-Germany, along with the world, was in a Depression.
-World War I had heaped unbearable levels of guilt and debt onto Germany.
-high inflation and rampant unemployment left people feeling hopeless.
These three points are the main ones
hope this helps
</span><span>-Germany's war machine was revving up its production. this was more later on, so i guess it doesn't count</span>