Invention Guides

what are some inventions made during the Classical Period of history?

I am trying to make a timeline powerpoint presentation of inventions and regions made during the Classical Period of history. I need 10 slides for my project and graphics, sounds, etc...so i need as much information as possible.

Public Comments

1. if you give the event,period and other details., I will try to collect and give you the sources for this slide
2. If you are referring to the Greco-Roman period there was the steam engine and the water screw (Archimedes) an concrete (the Romans).