1872-1928 1884-1962 1939-1945 20thcentury baruch bellewilcox biographies biography canada canada(nord) citizenparticipation civildefense defenses discoveryandexploration découverteetexploration eleanor environmentalists environmentalpolicy environnement feminists gjøa(navire) gjøa(ship) history horsemanship influenceroosevelt landis lawteachers lawyers national nord-ouest northern northwestpassage pacifists passagedu politiquegouvernementale roald southcarolina territoirenational territory travelamundsen travellarsen unitedstates unitedstateslawlandis voyagesamundsen voyageslarsen warwork worldwar