I was talking about the Greeks, not the Romans, entirely different civilisation(s) the Romans conquered. Look up "aeolipile" or "Hero's Engine". The ancient Greek steam powered device. Not sure why I'm voted down for stating historical fact. The Greeks had the beginning of steam power but never took it to the levels of the industrial revolution. If we look at ancient China too, they had a number of brilliant inventions but did not always follow through on them either.