Cummins ISB and QSB Engine Parts. Based on the Cummins B Series, the ISB engine was launched in 1998 and is available in 4 and 6 inline cylinder models. Design innovations include a 24-valve setup and the Interact electronic engine management system, both contributing to increased fuel efficiency and meeting emission regulations.
From 1920 to 1929, stocks more than quadrupled in value â not because of fundamentals such as corporate production and profits, but rather fueled by rampant speculation. The economic house of cards came to a screeching halt on Black Tuesday, October 29, 1929 when the bubble burst.
What is a 'Stock Market Crash' A stock market crash is a rapid and often unanticipated drop in stock prices. A stock market crash can be the result of major catastrophic events, economic crisis or the collapse of a long-term speculative bubble. However, public panic is a major contributor. Hordes of people removing their money from the banks or scrambling to sell their stocks and other assets all at the same time causes economic turmoil and exacerbates any existing economic instability.