9 discoveries that have fundamentally altered our understanding of human history
Briefly

The ancients left behind everyday objects, such as lime and bricks, that demonstrate building techniques, showcasing Roman ingenuity, with cement-making methods still in use today.
The Aztec Calendar Stone, rediscovered in 1790, illustrates the complexity of Aztec culture and challenges the misconception that Mexico was home to 'savage hordes'.
Read at Business Insider
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