Archery Diffusion--BC By Maddipotato Feb 18, 3500 Egyptians make bow their primary weapon (3500 BC) Feb 18, 7000 First bow discovered by scientists (dates back to 7000 BC) Feb 18, 9000 Various archery apparatuses are found (9000 BC) Feb 18, 9999 Cave paintings of bows and arrows (20000 BC) The date was 20,000 BC.