The two events that led to the event that is known as the black Tuesday are:
excessive speculation
consumerism
<h3>What was the black Tuesday?</h3>
This was the day that the wall street clashed. The day was in the year 1929. This was part of the events that caused the great depression in the United States.
It was the crash of the stock market in the state of New York.
After WWI the league of nations forced Germany to pay fpr the entire war, and took away all the land they had fought for. So it collapsed the German economy, which inevitably lead to WWII