What were the events of black tuesday that contributed to the wall street crash of 1929

16 million shares on the New York Stock Exchange in a single day. Billions of dollars were lost, wiping out thousands of investors. In the aftermath of Black Tuesday, America and the rest of the industrialized world spiraled downward into the Great Depression (1929-39), the deepest and longest-lasting economic downturn in the history of the Western industrialized world up to that time.

Because the discoveries were some of the oldest human remains.