Answer:
c.the U.S. stock market crashed.
Explanation:
This date is considered the beginning of the Great Depression. It was the worst financial and economic crisis in US and global history, the event every major current financial crisis in the world is compared with. It brought bankruptcy to hundreds of thousands of big, small and medium firms; millions of Americans lost their jobs and homes; it multiplied poverty and caused deprivation and terrible suffering among the masses. It lasted until the 1940s when WWII began.
