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 were the Four Causes of the Great Depression. High demands for consumer goods and agricultural products led to overpopulation. Buying on credit increased personal debt. Buying on margin was a risky market practice--. Bank loans for stock purchases was an unsound practice. The Smoot-Hawley Tariff created trade war worsened world economic conditions.