Who was the original creator of a viable steam engine?

Thomas Newcomern

From the introduction of the first viable steam engine by Thomas Newcomen at Dudley Castle coal mine in 1712 to the massive successes of the internal combustion engine in aeroplanes and automobiles at the beginning of the 20th century, the steam engine was the inspiration of industrialization and its major work-horse.

Explanation:

a.) d-day invasion of normandy.

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