James Watt's steam engine helped people as it was four times as fast as the one before it and it was much effective.
With his help with the engine it made it easier and better to use.
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On Answers.com, type in exactly: How did James Watts steam engine change the world? You must use these exact words.
A Scottish inventor and engineer credited with creating many improvements to the steam engine. The electrical Watt is named after him.