| Hint | Answer | % Correct |
|---|---|---|
| Country on the Arabian Sea that was formerly a maritime empire | Oman | 100%
|
| Third largest city and second largest metro area of Japan | Osaka | 100%
|
| Turkish speaking empire that conquered Constantinople in 1453 | Ottoman Empire | 98%
|
| Orange ape native to Borneo and Sumatra | orangutan | 94%
|
| Island group in the far south of Japan where karate originated | Okinawa | 91%
|
| River in Siberia that flows into the Arctic Ocean, and ends with the world's largest estuary | Ob | 74%
|
| City and oblast in southwestern Siberia | Omsk | 62%
|
| Ethnolingustic region comprising a Russian republic in the north, and an unrecognized breakaway state from Georgia in the south | Ossetia | 61%
|
| Tallest mountain of Cyprus | Mount Olympus | 51%
|
| Sea between the east coast of Siberia, Sakhalin, the Kuril Islands, and Hokkaido | Sea of Okhotsk | 48%
|
| White antelope with straight horns native to the Arabian Peninsula | oryx | 35%
|
| Second largest city of Kyrgyzstan, estimated to be 3,000 years old | Osh | 35%
|
| Founder of that empire | Osman I | 32%
|
| State in eastern India | Odisha | 20%
|
| Branch of Christianity prominent in Armenia, India, and the Middle East, (as well as Ethiopia) | Oriental Orthodox | 10%
|
| Russian word for "island" | ostrov | 7%
|
| Transliteration of the Uzbek name for Uzbekistan | O'zbekiston | 6%
|
| Collective name for the four Crusader states of Jerusalem, Tripoli, Antioch, and Edessa | Outremer | 5%
|
| Archipelago and its main island in the Indonesian province of North Maluku | Obi | 1%
|
| Ancient Syriac kingdom centred on Edessa, which became a Roman province in 214 | Osroene | 0%
|