Abbas ibn Firnas was the first person to make a real attempt to construct a flying machine and fly.
His first flight took place in 852 in Cordoba when he wrapped himself in a loose cloak stiffened with wooden struts and jumped from the minaret of the Great Mosque of Cordoba. Though this attempt was unsuccessful, he continued working on improving his design.
There are two: whether there is a need for their invention, and is their invention original.
la riata grande. it was one of the biggest invetion
The Quantum Theory.
the steam engine
George Washington Carver's greatest invention is peanut butter.
The Apple computer.
automobile
I stared early on when I was 9.
cramps,more tired
Jonas Salk's biggest invention was the Polio vaccine.
2.5 millions to 3,000 B.C.E.
I find it hard to decide , either the bulb or the gramaphone.