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4 Common History Myths Millions Still Believe Without Question

A single vivid image, a catchy quote, or an old cartoon caption can outlast decades of careful scholarship, especially once it lands in a textbook or a movie scene. The four myths below have survived for generations, repeated so often that most people never stop to check where the claims actually came from.

1. Napoleon Bonaparte was unusually short

The idea of a tiny, temperamental Napoleon has become such a fixture of pop culture that psychologists even coined the term "Napoleon complex" to describe short men overcompensating with aggression. The trouble is that the premise behind the nickname does not hold up. At his death, Napoleon was recorded as being "5 feet 2 inches" in French feet, which equates to about 5 feet 6.5 inches in modern measurements, slightly above average for Frenchmen of his era. The confusion traces back to a simple unit mismatch between French and English measuring systems, and it was happily exploited at the time. British propaganda further exaggerated his supposed lack of stature to ridicule him and undermine his authority, giving rise to the phrase "Napoleon complex," even though contemporary reports described him as a stocky, robust man. A wartime insult, in other words, quietly hardened into a "fact" that outlived the war itself.

2. Vikings wore horned helmets into battle

Ask most people to picture a Viking warrior and they will describe someone with a horned or winged helmet charging into combat. It is one of the most recognizable images in popular history, yet archaeology tells a completely different story.

There is no historical evidence that Vikings ever wore such headgear, and archaeologists have uncovered numerous Viking helmets over the years, but none have featured horns. So where did the image come from?

Costume designer Carl Emil Doepler created horned helmets for Wagner's "Der Ring des Nibelungen" opera in 1876, and this look became fixed in the popular imagination. Beyond the aesthetics, the design would have been a genuine liability on a real battlefield, since an impractical design like that would have provided an easy handhold for opponents to grab onto.

Actual Norse helmets were simple, rounded, and built purely for protection, not spectacle.

3. The Great Wall of China can be seen from space

This claim has circulated for centuries, long before anyone had actually been to space to check it. The earliest documented version of the myth traces to English antiquarian William Stukeley, who in a 1754 letter about Hadrian's Wall wrote that the Chinese Wall "makes a considerable figure upon the terrestrial globe, and may be discerned at the Moon." The claim later exploded into mainstream awareness through a famous 1932 cartoon strip that called the wall the mightiest work of man visible from the moon. Astronauts have since settled the question fairly conclusively. The consensus among people who have been to space is unambiguous: the wall was not visible from the International Space Station, was not visible from any Apollo mission, and was not visible to China's first astronaut, Yang Liwei, who spent 21 hours in orbit on the Shenzhou V mission in October 2003. Even Canadian astronaut Chris Hadfield weighed in directly, writing that "The Great Wall of China is not visible from orbit with the naked eye. It's too narrow, and it follows the natural contours and colours of the landscape," during his five-month tour in 2012 to 2013. The wall's own dimensions work against it too, since even at its widest points it barely stretches beyond a few meters across, making it nearly impossible to distinguish from the surrounding terrain at orbital distances.

4. Medieval people believed the Earth was flat

Perhaps no myth does a better job of painting an entire era as ignorant than this one. It suggests that ordinary people and educated scholars alike spent the Middle Ages convinced the planet was flat, right up until Columbus supposedly proved otherwise. In reality, the roundness of the Earth was never in serious dispute among educated Europeans of the period. Eratosthenes had already measured the planet's circumference in the third century BCE, and medieval scholars such as Bede, Thomas Aquinas, Roger Bacon, Albertus Magnus, and Johannes de Sacrobosco all worked within a spherical Earth tradition, using it to explain eclipses, daylight, climate and the motion of stars. The myth itself is a much newer invention. Historian Jeffrey Burton Russell traced its rise to the nineteenth century, and as he put it, "No one before the 1830s believed that medieval people thought that the Earth was flat." A large part of the blame falls on Washington Irving's 1828 fictionalized biography of Columbus, which invented a dramatic confrontation between the explorer and flat Earth believing scholars that never actually happened, and the story stuck far longer than the facts ever did. These four examples share a common thread. Each began with a misunderstanding, a piece of theater, or a convenient political jab, and each was repeated so often that repetition eventually stood in for evidence. None of this makes history less interesting. If anything, tracing how a myth took hold often reveals more about the century that invented it than about the century it claims to describe.