Why did so many people invest in the stock market in the 1920s

They thought it was a good place to make money and it never went down for 8 years in a row so everyone thought there's no risk. They knew they weren't going to make a ton of money putting it into the bank. So in the stock market, you can take $5,000 and make it worth $10,000 in that time. So people thought they could get rich. However, there were too many small investors investing as well. They also borrowed money on leverage to invest in.

answer; ///i do believe that the correct answer is (d); ///athens had a small population;

4 copper and gold, the california gold rush is why im pretty sure.