They say that necessity is the mother of invention. They had a need and over time improved on their response to that need until they had large functional ships.
535 bc
The Greeks did not invent pizza.
the olympics
! well I'm Greek so i should know that the ancient Greeks DID invent democracy!
yes the greek did invent the flamethrower
They didn't
maybe
No.
no
No, it was the Egyptians.
300b.c
Homosexuality has been around longer than history has been recorded, so no Greeks did not invent Gayness.