The stem engine was a revolutionary invention that started the Industrial Revolution. It was the invention that helped the machines to do lot of the work in the manufacturing, resulting in skyrocketing the manufacturing and much more wealth coming in. These were the primary reasons why the steam engine was so demanded and became widespread during the 18th and 19th century. The countries that had it were able to industrialize, making their economy much stronger and more productive, leading to constant economic growth and pilling up of wealth.