Mark Hanna Biography

Marcus Alonzo Hanna (September 24, 1837 – February 15, 1904) was an American businessman and Republican politician, who served as a United States Senator from Ohio as well as chairman of the Republican National Committee. A friend and political ally of President William McKinley, Hanna used his wealth and business skills to successfully manage McKinley's presidential campaigns in 1896 and 1900.