Adrenaline: (isolation of) John Jacob Abel, U.S., 1897. Aerosol can: Erik Rotheim, Norway, 1926. Air brake: George Westinghouse, U.S., 1868. Air conditioning: Willis Carrier, U.S., 1911.…
(Encyclopedia) World War I, 1914–18, also known as the Great War, conflict, chiefly in Europe, among most of the great Western powers. It was the largest war the world had yet seen.
World War I…
Biographies of U.S. representatives and senators from Pennsylvania Member Name Birth-Death ACHESON, Ernest Francis 1855-1917 ACKER, Ephraim Leister 1827-1903…
