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What did James Watt do to the steam engine to start the Industrial Revolution?

• He improved the existing design to make it more efficient and cost effective.
• He applied the use of horses to the steam engine to make it faster.
• He attached it to a locomotive.
• He invented the very first one.

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Answered by GPT-5 mini AI
He improved the existing design to make it more efficient and cost‑effective.

Watt added a separate condenser (and later other refinements like double‑acting cylinders and rotary motion), which greatly cut fuel use and made steam power practical for factories and mills. He did not invent the very first steam engine (Newcomen did earlier), he didn’t attach it to locomotives (that came later), and he didn’t apply horses to it.