Information and Communication Technologies
C.It increased trade on the Mississippi
<span>Herbert Hoover earned the nickname “The Great Humanitarian" because he voluntarily did services in extensive flood work, especially when the Mississippi River overflows its banks in 1927 causing flood to neighboring areas.</span>
Urban areas developed subways, elevated trains, and streetcar systems because if all commuters rode in cars it would cause traffic jams and major traffic. It made it easier for people to move around in bigger cities.
