Statistics for History by Letter - O

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Hint	Answer	% Correct
Turkish empire that conquered Constantinople	Ottoman Empire	96%
Greek athletic competition that started in 776 BC	Olympics	94%
Drug that led to two wars in China	Opium	89%
Cromwell's first name	Oliver	83%
One of two epics attributed to Homer	Odyssey	73%
Japanese island which was the site of bitter fighting in WWII	Okinawa	66%
Deadliest D-Day beach	Omaha Beach	64%
Title held by the heir to the Dutch throne	Prince/Princess of {Orange}	64%
City which Joan of Arc helped free from a siege	Orléans	59%
Pioneer trail from Missouri to the Willamette Valley	{Oregon} Trail	58%
"Father" of the A-bomb	J. Robert Oppenheimer	57%
Also known as the Bolshevik Revolution	{October} Revolution	52%
Language in which "Beowulf" was written	{Old} {English}	49%
Jacqueline Bouvier's second husband	Aristotle Onassis	47%
Cartel that declared an oil embargo in 1973	OPEC	47%
Site of a "land rush" in 1889	Oklahoma	41%
Roman poet who wrote "Metamorphoses"	Ovid	41%
Site of 1993 Israel/PLO accords	Oslo	33%
Ancient Mexican civilization known for colossal head sculptures	Olmec	29%
Relatives of the Visigoths	Ostrogoths	29%