Answer:
The people of those monarchies overthrowing them such as the French Revolution, which ironically was replaced by another monarchy.
Or even the government itself finding the monarchy unfit to lead to country which this is just hypothetical but when the British government was still a monarchy the Parliament could have overthrown the monarchy.
Explanation:
Give me second, imma do research and come back so like this answer so I would put the answers in the comments
Answer:
In 1929, the Stock Market crashed causing many people to lose their jobs and even sell their cars for money.
Explanation:
The Great Depression ensued, becoming the most famous in history
C is the answer to your question