During the 1920s, americans made risky investments in the stock market a  to drive down the price of stocksb  to stop others from buying on marginc  in hopes of making a huge profit

president thomas jefferson commissioned the expedition shortly after the louisiana purchase in 1803 to explore and to map the newly acquired territory, to find a practical route across the western half of the continent, and to establish an american presence in this territory before britain and other european powers