To quote Carl Sagan, "If you wish to make an apple pie from scratch, you must first invent the universe."

...I know you're trolling, but I seriously wonder where it would stop if we were to go down all that way.

Gotta give credit to whichever cavemen/cavewomen discovered fire, and all the civilizations that invented the wheel, Ben Franklin for harnessing the power of electricity, and then maybe Ken Thompson and Dennis Ritchie for inventing Unix.