I remember learning this, it should be A
Answer:
The bank run occurred because the stock market crashed and investors wanted immediate access to their liquid cash. This was not possible because many banks had invested heavily in the stock market and were not required to keep large sums of money on hand. Nor were the deposits of investors insured, so much of the liquid cash was gone. This situation led to great instability in domestic and international markets
Explanation: The Great Depression witnessed the collapse of the capitalist system as we know it.
The most deadly illness the pioneers have faced was Oregon Trail, it was spread by for hunting food, picking berries, and most of all this terrible game kids used to play that made them realize the Oregon Trail was real. It also lead up to bad fever, cholera, and dysentery.
This is the main reason of the deadly illness pioneers had.
Hope this helps you :)
Muslim traders brought islam to india