What was one feature of the united states economy during the 1920's that contributed to the great depression?

On October 24, 1929, as nervous investors began selling overpriced shares en masse, the stock market crash that some had feared happened at last. A record 12.9 million shares were traded that day, known as “Black Thursday.”

Explanation:

the answer would be a i think?

the correct answer is ''the programs costs have risen dramatically in the recent past'' hope this !