Fact: The Medieval period is traditionally divided into Early (c. 476-1000), High (1000-1300), and Late Middle Ages (1300-1500). Fun fact: The term "Middle Ages" was invented during the Renaissance by scholars who saw themselves as reviving classical culture after a "dark" middle period. The population of Europe grew from about 25 million in 500 CE to 70 million by 1300 CE before the Black Death reduced it significantly.

Fact: Arriving in Europe in 1347 via Genoese ships from Crimea, the plague killed 75-200 million people across Eurasia. Fun fact: Recent research suggests that human fleas and body lice might have been more significant vectors than rats. The flagellant movement emerged where people whipped themselves to atone for sins. Jewish communities were falsely blamed and massacred in many cities. The plague returned periodically until the 18th century.

Fact: A full suit of plate armor weighed only 45-55 lbs (20-25 kg), similar to modern military gear. Fun fact: Knights could mount horses without assistance, run, jump, and even do cartwheels in armor. The myth comes from Victorian-era misconceptions. Tournaments required agility; knights who couldn't get up would be easy prey. A modern experiment showed a person in reproduction armor could perform gymnastic moves.

Fact: Garderobes were simple stone seats with vertical shafts dropping waste into a cesspit or moat. Fun fact: The name "garderobe" (wardrobe) came from the belief that smell repelled moths from stored clothing. Attackers sometimes used garderobe chutes as weak points to enter castles. Moat cleaning was an unpleasant but necessary task. Some castles had multiple garderobes vented through chimneys to reduce smell inside.

Fact: Nine major Crusades occurred between 1095-1291. Fun fact: When Crusaders captured Jerusalem in 1099, they massacred an estimated 10,000-70,000 inhabitants. The Fourth Crusade (1202-1204) famously sacked Constantinople, a Christian city. The Children's Crusade (1212) never reached the Holy Land; many children were sold into slavery or died. Crusader states existed in the Levant for nearly 200 years before the last fell in 1291.

Fact: Medieval scholars knew the Earth was spherical, based on ancient Greek knowledge. Fun fact: The spherical Earth was established by Pythagoras (6th century BCE) and proved by Aristotle (4th century BCE). The myth of medieval flat-earth belief was largely created in the 19th century by historians like Washington Irving and John William Draper. Columbus actually underestimated Earth's circumference, which is why he thought he reached Asia.

Fact: Magna Carta (Great Charter) was forced on King John by rebellious barons. Fun fact: Only three of Magna Carta's 63 clauses remain in English law today, including the freedom of the English Church and the rights of freemen to justice. Four original copies survive from 1215. The charter inspired later documents like the US Constitution and Universal Declaration of Human Rights, though it only applied to "free men" (about 10-15% of the population).

Fact: Joan of Arc (1412-1431) led French forces to victory at Orléans (1429) at age 17. Fun fact: The English claimed Joan was a witch and heretic, but the Pope declared her innocent and she was canonized as a saint in 1920. The war introduced the longbow, which could pierce plate armor, and gunpowder weapons. The population of France dropped by half during the war due to combat, famine, and disease.

Fact: The University of Bologna (1088) is the oldest continuously operating university. Fun fact: Students as young as 14 attended university, studying the seven liberal arts (trivium: grammar, logic, rhetoric; quadrivium: arithmetic, geometry, music, astronomy). Lectures could last from 5 AM to 10 AM, followed by review sessions. "Bachelor" originally meant apprentice, "Master" meant teacher. Women were excluded from nearly all medieval universities.

Fact: Ordeals included hot iron (carrying a red-hot bar), cold water (floating or sinking), and blessed bread (choking indicated guilt). Fun fact: The Fourth Lateran Council (1215) forbade clergy from participating in ordeals, leading to their decline in Europe. Priests would often arrange "miraculous" outcomes by controlling conditions (e.g., water temperature). Ordeals were gradually replaced by jury trials. Some cultures still use similar practices today.