Answer:
Well here's a few ( depends what you're talking about)
Step-by-step explanation:
the discovery of fire
the invention of farming (planting seeds, then caring for and harvesting the crops)
the invention of the wheel
the invention of sails and sailing ships
the invention of gunpowder
the invention of writing
the invention of paper
the invention of printing
the discovery of the circulation of blood (how the heart pumps blood throughout the body)
the invention of the microscope and telescope
the discovery of microorganisms
the discovery that earth circles the sun
the discovery of gravity
the discovery of electricity and ways to control it
the invention of steam ships
the invention of the gasoline engine and motor vehicles (cars, trucks, etc.)
the invention of the telephone
the invention of the radio
the discovery of penicillin and other antibiotics
the invention of the computer and then the Internet