Joseph E. Brown - Joseph Emerson Brown (April 15 1821 November 30 1894) often referred to as Joe Brown was the 42nd Governor of Georgia from 1857 to 1865 and a U.S. Senator from 1880 to 1891. Governor Brown was a leading secessionist in 1861 taking his state out of the Union and into the Confederacy. A former Whig and a firm believer in states' rights he defied the national government's wartime policies. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
A:
Office Holder