If you could take one item back in time to 1000 BC, what would it be and how wou

Question:

If you could take one item back in time to 1000 BC, what would it be and how would you change history?

Best Answer - Chosen by Asker: The steam engine. You can reproduce it with the materials of the time and kick off an industrial revolution in Ancient Greece who had everything for it except the knowledge of combustion.