Keep scrolling down for answers and more stats ...
1. Axis leaders in World War II
Though he ideologically supported the Axis, Spain (under Franco) remained neutral during the entirety of the Second World War.
Hirohito
Adolf Hitler
Benito Mussolini
Francisco Franco
2. Battles lost by France during the Napoleonic Wars
Austerlitz was won convincingly by Napoleon - so much so that it was a direct cause for the dissolution of the Holy Roman Empire in 1806.
Trafalgar
Austerlitz
Leipzig
Waterloo
3. Founding Fathers of the United States
Johnson served as U.S. President from 1865 to 1869 - after Lincoln was assassinated.
Andrew Johnson
Alexander Hamilton
James Madison
John Jay
4. African Dictators of the 20th century
Duvalier (nicknamed "Papa Doc") was the ruler of Haiti between 1957 and 1971.
Mobutu Sese Seko
Teodoro Obiang
Idi Amin
François Duvalier
5. Members of the Holy Roman Empire
Hungary was never part of the HRE - they only united with Austria (a famous HRE member) in 1867, after the Empire's dissolution.
Bohemia
Hungary
Geneva
Flanders
6. Mesoamerican Civilizations
The Guaraní are a group of culturally related indigenous peoples (not a civilization) originating from present-day Paraguay.
Maya
Zapotec
Guaraní
Olmec
7. Countries formerly of French Indochina
Thailand was never part of French Indochina - it was actually never directly ruled by any European power.
Vietnam
Laos
Cambodia
Thailand
8. Roman Emperors
Though he might have shown the qualities of an Emperor, Julius Caesar never claimed the title of Emperor.
Julius Caesar
Claudius
Caligula
Augustus
9. Democratic Party Presidents
Dwight D. Eisenhower ran in 1952 and 1956 as a Republican.
Franklin D. Roosevelt
John F. Kennedy
Harry S. Truman
Dwight D. Eisenhower
10. Chinese dynasties
Xi'an was the capital of many dynasties (incluiding the Han), but never the name for a dynasty itself.
Xian
Ming
Han
Qing
11. Pacific Territories formerly owned by the British
Even though they have the Union Jack on their flag, Hawaii was never directly owned nor controlled by the British.
Hawaii
Fiji
Solomon Islands
Pitcairn Islands
12. Ancient Greek philosophers
Sophocles was an Ancient Greek tragedian, not a philosopher.
Thales
Socrates
Zeno of Elea
Sophocles
13. South American Libertadores
Though a contemporary to the Libertadores, López de Santa Anna initially opposed independence for Mexico (his home country), and is better known for ruling his nation during the Mexican-American War.
Pedro I of Brazil
José de San Martín
Antonio López de Santa Anna
Simón Bolivar
14. Scientific Revolution thinkers
Lord Kelvin (born William Thomson) was a very important 19th century scientist, but the Scientific Revolution only lasted between the 16th and 17th centuries.
Lord Kelvin
Andreas Vesalius
Nicolaus Copernicus
Galileo Galilei
15. Kings of the United Monarchy (of Israel and Judeah)
Isaac is one of the three patriarchs of the Israelites - but he never ruled any kingdom.
Saul
David
Isaac
Solomon
16. Italian Renaissance Artists
Dante was a famous writer of the late 13th and early 14th century - over 100 years before the start of the Renaissance.
Michelangelo
Sandro Botticelli
Leonardo da Vinci
Dante Alighieri
17. "Great" Rulers
Charles II of Spain was actually known as "El Hechizado" (The Bewitched) due to his physical disabilities. Honestly, not that Great.
Cyrus II of Persia
Charles II of Spain
Frederick II of Prussia
Peter I of Russia
18. Mesopotamian Civilizations
Though the Hittites controlled a portion of Upper Mesopotamia for some time, they were based in Anatolia, not Mesopotamia.
Assyrians
Sumerians
Hittites
Babylonians
19. Non-Aligned Movement founders
Indonesia was a founding member of the Non-Aligned Movement, but it joined in 1961 - under the rule of Sukarno (Suharto began his tenure in 1967).
Suharto
Jawaharlal Nehru
Gamal Abdel Nasser
Josip Broz Tito
20. French Enlightenment thinkers
Comte was a 19th century philosopher and a predecessor to modern sociology, but was not part of the French Enlightenment Era - which ended after the French Revolution.