Who improved the steam engine produced by Newcomen and patented the new engine in 1781?
A. James Watt
B. Mathew Boulton
C. Richard Arkwright
D. Henry Patullo
Answer:A
Who improved the steam engine produced by Newcomen and patented the new engine in 1781?
A. James Watt B. Mathew Boulton C. Richard Arkwright D. Henry Patullo