The Fourth Millennium BCE
This was a time of innovation. Somewhere between 4,000 and 3,001 BCE (6,000-5000 years ago): Beginning of the Bronze Age Writing systems emerged (Mesopotamian cuneiform and Egyptian hieroglyphics), proto-writing may have emerged earlier Probable first domestication of the horse (Ukraine) Earliest known numerals (Egypt) Lyres, harps, flutes and clarinets (Egypt) Desertification of Northern Africa begins ... Read more