OAU Biography Chronology Events Index	Opera Biography Chronology Events Index	Opera Biography Chronology Events Index	Opium Wars, 1st Biography Chronology Events Index	Opium Wars, 2nd Biography Chronology Events Index
Orange Democratic Movement Biography Chronology Events Index	Orange Dynasty Biography Chronology Events Index	Orangia Unie Biography Chronology Events Index	Order Teutons Biography Chronology Events Index	Organisation African Unity Biography Chronology Events Index
Orlov Biography Chronology Events Index	Orthodox Church Biography Chronology Events Index	Orthodox Church Biography Chronology Events Index	Osmanli Dynasty Biography Chronology Events Index	Ottoman Empire Biography Chronology Events Index
Ouchi House Wars Biography Chronology Events Index	Our Home Is Russia Paty Biography Chronology Events Index