Name 2 figures of the industrial revolution and briefly explain their contributions?

Here are some more important people:

1. Sir Humphrey Davy - he was a famous inventor as well as chemist of English origin. His most prized invention was the Davy lamp which helped miners while they were working in order to detect gas as well as to improve their safety.

2. George Stephenson - a very important person for the Industrial Revolution. He was a mechanical engineer who invented the steam engine which was used in trains. He was also instrumental when it came to building a couple of important railways. 

Choices? multiple choice