Greek Mythology are myths that greeks made to explain natural things. Most of them are stories from Greece but rome has changed a lot of the stories. People would pray and worship the ancient gods.
Pliny the Elders' real name is Gaius Punius. He made 75 books. He was from Rome and he was in the military, 37 volumes of natural history; plants, animals, insects, birds
Hadrian built a wall and he was a roman emperor. He had a strong army and conquered many. He had built the wall to keep out the scottish. This stopped the wars.
He is a mathmetician, born in Syracuse, went to Alexandria, then back to Syracuse, he created the lever and compound pulley.