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.
The Simpsons 27th season had 22 episodes, best I could do. If it's how many in October, it's 4.
China assisted north korea