George Stephenson was an English engineer and inventor who played a pivotal role in the development of steam locomotives during the Industrial Revolution.

"Horse" is a Wikipedia page that provides comprehensive information about the domesticated equine species called horse.

The Industrial Revolution was a period of major economic and technological changes that took place in the late 18th and early 19th centuries.

Mail refers to the system of sending and receiving messages and packages through a postal service.

The steam engine is a type of engine that harnesses the power of steam to produce mechanical work.