Please answer the following question: Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Vladko Macek - Vladko Macek (20 June 1879 15 May 1964) was a Croatian politician active within the Kingdom of Yugoslavia in the first half of the 20th century. He led the Croatian Peasant Party (HSS) following the 1929 assassination of Stjepan Radic and through World War II.
A:
Office Holder