Well, the Romans built several thousand miles of roads so good they still exist today. They also built water aqueducts, many of which still stand. In Britain, at Bath, they built a hot water spa whose plumbing still works.
The Greeks are credited with having the first Democratic government.
The Babylonians built functional electric batteries.
The Egyptians had toy gliders which actually could fly.
The Arabs made a study of astronomy so sophisticated we still use some of their names for stars. They also invented the magnifying glass.
