10 Unsolved Historical Mysteries That Still Confuse Experts

3. The Rosetta Stone

The Rosetta Stone, found in Egypt in 1799, changed history forever. It has the same text written in three scripts—Greek, Demotic, and Egyptian hieroglyphs.

Thanks to this stone, experts were able to finally understand ancient Egyptian writing. But even today, it makes us wonder how civilizations thousands of years ago knew so much about language and knowledge.