Q. The first steam engine, used for pumping water from mine shafts was invented in 1711 by? (Solved)
1. William Blake.
2. Matthew Boulton.
3. James Watt.
4. Thomas Newcomen.
- d. Thomas Newcomen.
1. William Blake.
2. Matthew Boulton.
3. James Watt.
4. Thomas Newcomen.