How did the first bull run get its name?

The term "bull run" originated from the Stock Market, where a "bull" signifies rising prices and investor optimism. The phrase gained prominence during the first major bull run from 1921 to 1929 in the United States, characterized by a significant rise in stock prices and economic prosperity. The name reflects the bullish behavior of investors, who, like a bull, charge forward, driving up market values. The term has since been used to describe other periods of sustained market growth.