The Mongols Created the First International Postal System Called the Yam
The Mongol Empire established an advanced relay postal system called the Yam that allowed messages to travel across the empire at…
History
2 factsLeonardo da Vinci designed flying machines centuries before aviation
Leonardo da Vinci created detailed aircraft designs in the 1480s-1500s. While impractical with available materials and engines, his designs…
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